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Fracture Diagnostic Case Studies

East Texas Hydraulic Fracture Imaging Project: Measuring Hydraulic Fracture Growth of Conventional Sandfracs and Waterfracs - Mayerhofer, et al.: SPE paper 63034 presented at the SPE Annual Technical Conference and Exhibition held in Dallas, Texas, 1-4 October 2000

Surface and Downhole Tiltmeter Mapping: An Effective Tool for Monitoring

Downhole Drill Cuttings Disposal - Griffin, et al.: SPE paper 63032 presented at the SPE Annual Technical Conference and Exhibition held in Dallas, Texas, 1-4 October 2000. Diagnostic Techniques to Understand Hydraulic Fracturing: What? Why? and How? - Cipolla, et al.: SPE paper 59735 presented at the SPE/CERI Gas Technology Symposium held in Calgary, Alberta Canada, 3-5 April 2000

Tiltmeter Hydraulic Fracture Mapping in the North Robertson Field, West Texas - Mayerhofer, et al.: SPE 59715 presented at the SPE Permian Basin Oil and Gas Recovery Conference held in Midland, Texas, 21-23 March 2000.

Identification and Implications of Induced Hydraulic Fractures in Waterfloods:

Case History HGEU - Griffin, et al.: SPE 59525 presented at the SPE Permian Basin Oil and Gas Recovery Conference held in Midland, Texas, 21-23 March 2000.

Use of Hydraulic Fracture Diagnostics to Optimize Fracturing Jobs in the Arcabuz-Culebra Field - Wolhart, et al.: SPE paper 60314 presented at the 2000 SPE Rocky

Mountain Regional/Low Permeability Reservoirs Symposium and Exhibition held in Denver, Colorado, 12-15 March 2000.

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The Mounds Drill-Cuttings Injection Field Experiment: Final Results and

Conclusions- Drilling Conference held in New Orleans, Louisiana, 23-25 February 2000.

Moschovidis, et al.: SPE paper 59115 presented at the 2000 IADC/SPE Tiltmeter Mapping to Monitor Drill Cuttings Disposal - 37th U.S. Rock Mechanics Symposium, Vail, 6-9 June 1999.

Griffin, et al.: presented at the Fracture Growth and Reorientation in Steam Injection Wells - Weijers, et al.: SPE paper 079 presented at the 1999 International Thermal Operations and Heavy Oil Symposium, Bakersfield, 17-21 March 1999.

A Case History: Completion and Stimulation of Horizontal Wells with Multiple Transverse Hydraulic Fractures in the Lost Hills Diatomite - Emanuele, et al.: SPE

paper 46193 presented at the 1998 SPE Western Regional Meeting, Bakersfield, 10-13 May 1998.

A Case History: Completion and Stimulation of Horizontal Wells with Multiple Transverse Hydraulic Fractures in the Lost Hills Diatomite - Emanuele, et al.: SPE

paper 39941 presented at the 1998 SPE Rocky Mountain Regional Conference, Denver, 6-8 April 1998.

Downhole Tiltmeter Fracture Mapping: Finally Measuring Hydraulic Fracture Dimensions - Regional Meeting, Bakersfield, 10-13 May 1998.

Wright, et al.: SPE paper 46194, presented at the 1998 SPE Western Surface Tiltmeter Fracture Mapping Reaches New Depths - 10,000 Feet, and Beyond - Wright, et al.: SPE paper 39919 presented at the 1998 SPE Rocky Mountain Regional Conference, Denver, 6-8 April 1998.

Wellbore-to-fracture Communication Problems Pose Challenges in California Diatomite Horizontal Wells - Annual Technical Conference, San Antonio, 5-8 Oct. 1997.

Wright, et al.: SPE paper 38632 presented at the 1997 Horizontal Hydraulic Fractures: Oddball Occurrences or Practical Engineering Concern?- Meeting, Long Beach, 25-27 June 1997.

Wright, et al.: SPE paper 38324 presented at the 1997 Western Regional Fracture Treatment Design and Evaluation in the Pakenham Field: A Real-Data Approach- Wright, et al.: SPE paper 371 presented at the 1996 Annual Technical Conference, Denver, 6-9 Oct. 1996

Treatment Diagnostics and Net Pressure Analysis Assist with Fracture Strategy

Evaluation in the Belridge Diatomite - 1996 Western Regional Meeting, Anchorage, 22-24 May 1996.

Minner, et al.: SPE paper 35696 presented at the Reorientation of Propped Refracture Treatments in the Lost Hills Field - Wright, et al.: SPE paper 276 presented at the 1994 Western Regional Meeting in Long Beach, 23-25 March 1994.

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Reservoir Engineering / Well Testing Case Studies

Infill Drilling and Reserve Growth Determination in Lenticular Tight Gas Sands - Cipolla, et al.: SPE paper 36735 presented at the 1996 Annual Technical Conference in Denver, CO, 7-9 October 1996.

A Statistical Approach to Infill Drilling Studies: Case History of the Ozona Canyon Sands - Cipolla, et al.: SPERE, August 1996, 196-202.

Hydraulic Fracture Technology in the Ozona Canyon and Penn Sands - Cipolla, C.L.: SPE paper 35196 presented at the 1996 Permian Basin Oil & Gas Recovery Conference, Midland, TX, 27-29 March 1996.

Practical Application of In-Situ Stress Profiles - Cipolla, et al.: SPE paper 28607

presented at the 1994 Annual Technical Conference and Exhibition, New Orleans, LA, 25-28 September 1994.

Field Application of Static Tubing Pressure Data and On-Site Fracture Modeling -

Cipolla, et al.: SPE paper 28491 presented at the 1994 Annual Technical Conference in New Orleans, LA, 25-28 September 1994.

Hydraulic Fracture Performance in the Moxa Arch Frontier Formation - Cipolla, et al.: SPE paper 25918 presented at the 1993 Rocky Mountain Regional/Low Permeability Reservoirs Symposium, Denver, 12-14 April 1993.

Infill Drilling in the Moxa Arch: A Case History of the Frontier Formation - Cipolla, et al.: SPE paper 24909 presented at the 1992 SPE Annual Technical Conference in Washington, DC, 4-7 October 1992.

Fracture Diagnostic Technologies

Diagnostic Techniques to Understand Hydraulic Fracturing: What? Why? and How? - Cipolla, et al.,: SPE paper 59735 presented at the SPE/CERI Gas Technology Symposium held in Calgary, Alberta Canada, 3-5 April 2000.

Understanding Hydraulic Fracture Growth: Tricky but Not Hopeless - Wright, et al.: SPE paper 56724 presented at the 1999 Annual Technical Conference and Exhibition held in Houston, TX, 3-6 October 1999.

Downhole Tiltmeter Fracture Mapping: A New Tool for Directly Measuring

Hydraulic Fracture Growth - Wright, et al.: SPE paper 49193 presented at the 37th U.S. Rock Mechanics Symposium, Vail, 6-9 June 1999.

Downhole Tiltmeter Fracture Mapping: A Step Forward in Fracture Diagnostics - Wright, et al.: GasTIPS, Vol. 4, No 3, (Summer 1998), pp. 18-26.

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Downhole Tiltmeter Fracture Mapping: Finally Measuring Hydraulic Fracture Dimensions - Regional Meeting, Bakersfield, 10-13 May 1998.

Wright, et al.: SPE paper 46194, presented at the 1998 SPE Western Surface Tiltmeter Fracture Mapping Reaches New Depths - 10,000 Feet, and Beyond - Regional Conference, Denver, 6-8 April 1998.

Wright, et al.: SPE paper 39919 presented at the 1998 SPE Rocky Mountain Tiltmeter Fracture Mapping: From the Surface And Now Downhole - Hart's Petroleum Engineer International (January 1998).

Wright, et al.: Deep Hydraulic Fracture Imaging: Recent Advances in Tiltmeter Technologies - Castillo, et al.: presented at the International Rock Symposium, June/July 1997.

Fracture and Reservoir Pressure Analysis Techniques and Concepts

Simultaneous Propagation of Multiple Hydraulic Fractures - Evidence, Impact and Modeling Implications - International Oil and Gas Conference and Exhibition in Beijing, China, 7-10 November 2000. Weijers, et al.: SPE paper 772 to be presented at the

Understanding Fracture Performance by Integrating Well Testing & Fracture

Modeling - Conference, New Orleans, 27-30 September 1998.

Cipolla, et al.: SPE paper 49044 presented at the 1998 SPE Annual Technical What Causes Bumps in Minifrac Pressure Declines? - presented at the 1998 SPE Rocky Mountain Regional Conference, Denver, 6-8 April 1998. Shaoul, et al.: SPE paper 39947 Fracture Injection Test Interpretation: Leakoff Coefficient vs. Permeability

Estimation - Mayerhofer, et al.: SPE-Production and Facilities (November 1997) pp. 231-236.

Implementation of a Real-Data Fracture Analysis Methodology Improves Fracture Treatment Success - Weijers, et al.: GasTIPS, Vol. 3, No 3, (Summer 1997), pp. 44-49. Real-Data Fracture Analysis Enables Successful Hydraulic Fracturing in the Point of Rocks Formation, Kern County, California - at the 1997 SPE Western Regional Meeting, Long Beach, CA, 25-27 June 1997. Minner, et al.: SPE paper 38326 presented On-Site Step-Down Test Analysis Diagnoses Problems and Improves Fracture Treatment Success - 1977).

Wright, C. A.: Hart's Petroleum Engineer International (January Integration of Fracturing Dynamics and Pressure Transient Analysis for Hydraulic Fracture Evaluation - Arihara, et al.: SPE paper 36551 presented at the 1996 SPE Annual Technical Conference and Exhibition, Denver, 6-9 October 1996.

Robust Technique for Real-Time Closure Stress Determination - Wright, et al.: SPEPF (August 1996).

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Pressure-Transient Analysis of Fracture Calibration Tests - Mayerhofer, et al.: Journal of Petroleum Technology (March 1995) 229.

Field Implementation of Proppant Slugs to Avoid Premature Screen-out of

Hydraulic Fractures with Adequate Proppant Concentration - Cleary, et al.: paper SPE 252 presented at the 1993 Rocky Mountain Regional/Low Permeability Reservoirs Symposium, Denver, 12-14 April 1993.

On-Site Real-Time Analysis Allows Optimal Propped Fracture Stimulation of a Complex Gas Reservoir - Production Operations Symposium, Oklahoma City, 21-23 March 1993.

Johnson, et al.: SPE paper 214 presented at the 1993 Laboratory Testing and Fundamental Physics

Fresh Water Injection Stimulation in a Deep Tight Oil Reservoir - Wong, et al.: SPE paper 62618 presented at SPE/AAPG Western Regional Meeting held in Long Beach, California, 19-23 June 2000.

Time Lapse Ultrasonic Measurements of Laboratory Hydraulic Fracture Growth: Width Profile and Tip Behavior - Groenenboom, et al..: SPE paper 56727 presented at the 1999 Annual Technical Conference and Exhibition held in Houston, TX, 3-6 October 1999.

Roughness of Hydraulic Fractures: The Importance of In-Situ Stress and Tip

Processes - Conference and Exhibition held in Houston, TX, 3-6 October 1999.

van Dam, et al.: SPE paper 56596 presented at the 1999 Annual Technical The Influence of Steam Pressure on Thermal Spalling of Sedimentary rock: Theory and Experiment - Hettema, et al.: Int. J. Rock Mech. Sci, Vol 35, no 1, pp3-15.

Experimental Study on the Impact of Perforations on Hydraulic Fracture Tortuosity - Conference, The Hague, August 1998.

Ketterij, et al.: SPE paper 38149 presented at the SPE European Formation Damage The Poromechanical Behaviour of Flser Sandstone: Stress and Temperature Dependent - Hettema, et al.: SPE paper 47306, Eurock 1998.

Hydraulic Fractures with Multiple Segments I. Observations and Model

Formulation - 00097, 1997.

Germanovich, et al.: Int. J. Rock. Mech. & Min. Sci. 34:3-4, Paper No. Experimental Study of the Impact of Plastic Rock Deformation on Hydraulic

Fracture Geometry - Dam, et al.: Int. J. Rock. Mech. & Min. Sci. 34: 3-4, Paper No. 318. Complications with Stress Tests -- Insights from a Fracture Experiment in the

Ultra-Deep KTB Borehole - Annual Technical Conference and Exhibition, Denver, 6-9 October 1996.

De Pater, et al.: SPE paper 337 presented at the 1996 SPE A New Mechanism for Hydraulic Fracture Initiation - Min. Sci. & Geomech. Abstr. (1996).

Weijers, et al.: Int. J. Rock Mech. 5

Experimental Verification of Dimensional Analysis for Hydraulic Fracturing - De Pater, et al.: SPEPF (Nov. 1994).

Experimental Study of Non-Linear Effects in Hydraulic Fracture Propagation - De Pater, et al.: SPEPF (Nov. 1994).

Experimental Study of Fracturing Fluid Loss - Petroleum Technology (October 1994) 49-56.

Mayerhofer, et al.: Journal of Canadian Physical and Numerical Modeling of Hydraulic Fracture Closure - De Pater, et al.: SPE paper 28561 presented at the 1994 Annual Technical Conference and Exhibition, New Orleans, 25-28 September 1994.

Interaction and Link-up of Hydraulic Starter Fractures Close to a Perforated Wellbore - Conference, Delft, 29-31 August 1994.

Weijers, et al.: SPE paper 28077 presented at the 1994 SPE/ISRM Eurock Geometry of Hydraulic Fractures Induced From Horizontal Wellbores - al.: SPEPF (May 1994) 87-92.

Weijers, et Field Cases for Permeability Determination from Minifracs - Mayerhofer, et al.: SPE paper 26999 presented at the 1994 Latin American/Caribbean Petroleum Conference in Buenos Aires, Argentina, 27-29 April 1994

Permeability Estimation from Fracture Calibration Treatments - Mayerhofer, et al.: SPE paper 26039 presented at the 1993 Western Regional meeting in Anchorage, Alaska, 26-28 May 1993.

Interpretation-and Late-Time Filtration Phenomena of Crosslinked Polymer Cakes in Front of Long Cores - Production Operations Symposium in Oklahoma City, 21-23 March 1993.

Mayerhofer, et al.: SPE paper 2 presented at the 1993 High Temperature Properties of Roof Rock of Coal - International ISRM Symposium on Rock Characterization (Eurock '92), Checster, UK. Hettema, et al.: Proc.

Hydraulic Fracture Reorientation in Model Tests - Weijers, et al.: paper SPE 23790 presented at the 1992 Formation Damage Control Symposium, Lafayette, 26-27 February 1992.

Effects of Temperature and Pore Water on Creep of Sandstone Rock - Hettema, et al.: Proc. 32nd US Symposium, 'Rock Mechanics as a Multidisciplinary Science', Norman, OK, ed. J.C. Roegiers, Balkema Rotterdam, p393-404.

Comparison of Fluid-Loss Properties of Borate,- Zirconate-, and Non-Crosslinked Fracturing Fluids - Regional Conference, Lexington, Kentucky, 22-25 October 1991.

Zeilinger, et al.: SPE paper 23435 presented at the 1991 Eastern An Experimental and Fundamental Interpretation of Filtercake Fracturing Fluid Loss - Mayerhofer, et al.: SPE paper 22873 presented at the 1991 SPE Annual Technical Conference, Dallas, TX, 6-9 October 1991.

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Fracture Engineering and Design Case Studies

Case Study of Hydraulic Fracture Completions in Horizontal Wells, South Arne

Field, Danish North Sea - Cipolla, et al.: SPE paper 383 to be presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition held in Brisbane, Australia, 16-18 October 2000.

East Texas Hydraulic Fracture Imaging Project: Measuring Hydraulic Fracture Growth of Conventional Sandfracs and Waterfracs - Mayerhofer, et al.: SPE paper 63034 to be presented at the SPE Annual Technical Conference and Exhibition held in Dallas, Texas, 1-4 October 2000.

Application of Fracture Technology in the Hanoi Trough, Vietnam - Cipolla, et al.: SPE paper 59792 presented at the SPE/CERI Gas Technology Symposium held in Calgary, Alberta Canada, 3-5 April 2000.

Tiltmeter Hydraulic Fracture Mapping in the North Robertson Field, West Texas - Mayerhofer, et al.: SPE 59715 presented at the SPE Permian Basin Oil and Gas Recovery Conference held in Midland, Texas, 21-23 March 2000.

Case History of Complex Fracture Behavior in the Hanoi Trough, Vietnam - Cipolla, et al.: SPE paper 538 presented at the 1999 Annual Technical Conference and Exhibition held in Houston, TX, 3-6 October 1999.

Fracture Growth and Reorientation in Steam Injection Wells - Weijers, et al.: SPE paper 079 presented at the 1999 International Thermal Operations and Heavy Oil Symposium, Bakersfield, 17-21 March 1999.

A Case History: Completion and Stimulation of Horizontal Wells with Multiple Transverse Hydraulic Fractures in the Lost Hills Diatomite - Emanuele, et al.: SPE

paper 46193 presented at the 1998 SPE Western Regional Meeting, Bakersfield, 10-13 May 1998.

A Case History: Completion and Stimulation of Horizontal Wells with Multiple Transverse Hydraulic Fractures in the Lost Hills Diatomite - Emanuele, et al.: SPE

paper 39941 presented at the 1998 SPE Rocky Mountain Regional Conference, Denver, 6-8 April 1998.

Are Proppants Really Necessary? - Mayerhofer, et al.: JPT March 1998, pp. 36-37. Post-Frac Analyses Indicating Multiple Fractures Created in a Volcanic Formation - Sato, et al.: SPE paper 39513 (revised November 1999) presented at the 1998 India Oil and Gas Conference and Exhibition, New Delhi, India, 10-12 Feb. 1998.

Proppants? We Don't Need No Proppants - Mayerhofer, et al.: SPE paper 38611 presented at the ATC 97 in San Antonio, TX October 1997.

Wellbore-to-fracture Communication Problems Pose Challenges in California

Diatomite Horizontal Wells,\" - Wright, et al.: SPE paper 38632 presented at the 1997 Annual Technical Conference, San Antonio, 5-8 Oct. 1997.

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Horizontal Hydraulic Fractures: Oddball Occurrences or Practical Engineering Concern? - Wright, et al.: SPE paper 38324 presented at the 1997 Western Regional Meeting, Long Beach, 25-27 June 1997

Real-Data Fracture Analysis Enables Successful Hydraulic Fracturing in the Point of Rocks Formation, Kern County, California - Minner, et al.: SPE paper 38326 presented at the 1997 SPE Western Regional Meeting, Long Beach, CA, 25-27 June 1997. AST-Influenced Treatment Strategy Results in Significant Savings at the Rincon Unit - Minner, et al.: GasTIPS, Volume 2 Number 3, (Fall 1996), pp. 29-33.

Fracture Treatment Design and Evaluation in the Pakenham Field: A Real-Data Approach - Wright, et al.: SPE paper 371 presented at the 1996 Annual Technical Conference, Denver, 6-9 Oct. 1996.

Optimizing Hydraulic Fracture Design in the Diatomite Formation, Lost Hills Field - Nelson, et al.: SPE paper 374 presented at the 1996 Annual Technical Conference, Denver, 6-9 October 1996

Treatment Diagnostics and Net Pressure Analysis Assist with Fracture Strategy

Evaluation in the Belridge Diatomite - Minner, et al.: SPE paper 35696 presented at the 1996 Western Regional Meeting, Anchorage, 22-24 May 1996

Hydraulic Fracture Technology in the Ozona Canyon and Penn Sands - Cipolla, C.L.: SPE paper 35196 presented at the 1996 Permian Basin Oil & Gas Recovery Conference, Midland, TX, 27-29 March 1996

Enhanced Hydraulic Fracture Technology for a Coal Seam Reservoir in Central

China - Wright, et al.: SPE paper 299 presented at the 1995 International Oil and Gas Exhibition, Beijing, 14-17 November 1995

Hydraulic Fracture Reorientation in Primary and Secondary Recovery from Low-Permeability Reservoirs - Wright, et al.: SPE paper 30484 presented at the 1995 Annual Technical Conference and Exhibition, Dallas, 22-25 October 1995

Hydraulic Fracture Orientation and Production/Injection Induced Reservoir Stress Changes in Diatomite Waterfloods - Wright, et al.: SPE paper 29625 presented at the 1995 Western Regional Meeting, Bakersfield, 8-10 March 1995

Practical Application of In-Situ Stress Profiles - Cipolla, et al.: SPE paper 28607

presented at the 1994 Annual Technical Conference and Exhibition, New Orleans, LA, 25-28 September 1994

Field Application of Static Tubing Pressure Data and On-Site Fracture Modeling -

Cipolla, et al.: SPE paper 28491 presented at the 1994 Annual Technical Conference in New Orleans, LA, 25-28 September 1994

Geometry of Hydraulic Fractures Induced From Horizontal Wellbores - Weijers, et al.: SPEPF (May 1994) 87-92.

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Reorientation of Propped Refracture Treatments in the Lost Hills Field - Wright, et al.: SPE paper 276 presented at the 1994 Western Regional Meeting in Long Beach, 23-25 March 1994.

Real-Time and Post-Frac 3-D Analysis of Hydraulic Fracture Treatments in

Geothermal Reservoirs - Wright, et al.: presented at the 1994 Stanford Geothermal Conference, Stanford University, Palo Alto, Jan.

Propped Fracture Stimulation in Deviated North Sea Gas Wells - de Pater, et al.: SPE 26794, Offshore Conference, Aberdeen, (1993).

Hydraulic Fracture Performance in the Moxa Arch Frontier Formation - Cipolla, et al.: SPE paper 25918 presented at the 1993 Rocky Mountain Regional/Low Permeability Reservoirs Symposium, Denver, 12-14 April 1993.

Field Application of Real-Time Hydraulic Fracturing Analysis - Martinez, et al.: SPE paper 25916 presented at the 1993 Rocky Mountain Regional/Low Permeability reservoirs Symposium, Denver, 12-14 April 1993.

Infill Drilling in the Moxa Arch: A Case History of the Frontier Formation - Cipolla, et al.: SPE paper 24909 presented at the 1992 SPE Annual Technical Conference in Washington, DC, 4-7 October 1992.

An HDR System Hydraulics Model and Detailed Analysis of the 1991 Circulation Test at the Hijiori HDR Site, Japan - Takasugi, et al.: presented at the Geothermal Resources Council Annual Meeting, Reno, 8-11 October 1995.

International Case Studies

Case Study of Hydraulic Fracture Completions in Horizontal Wells, South Arne

Field, Danish North Sea - Cipolla, et al.: SPE paper 383 to be presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition held in Brisbane, Australia, 16-18 October 2000.

Application of Fracture Technology in the Hanoi Trough, Vietnam - Cipolla, et al.: SPE paper 59792 presented at the SPE/CERI Gas Technology Symposium held in Calgary, Alberta Canada, 3-5 April 2000.

Use of Hydraulic Fracture Diagnostics to Optimize Fracturing Jobs in the Arcabuz-Culebra Field - Wolhart, et al.: SPE paper 60314 presented at the 2000 SPE Rocky

Mountain Regional/Low Permeability Reservoirs Symposium and Exhibition held in Denver, Colorado, 12-15 March 2000.

Case History of Complex Fracture Behavior in the Hanoi Trough, Vietnam - Cipolla, et al.: SPE paper 538 presented at the 1999 Annual Technical Conference and Exhibition held in Houston, TX, 3-6 October 1999.

Post-Frac Analyses Indicating Multiple Fractures Created in a Volcanic Formation - Sato, et al.: SPE paper 39513 (revised November 1999) presented at the 1998 India Oil and Gas Conference and Exhibition, New Delhi, India, 10-12 Feb. 1998.

9

Enhanced Hydraulic Fracture Technology for a Coal Seam Reservoir in Central

China - Wright, et al.: SPE paper 299 presented at the 1995 International Oil and Gas Exhibition, Beijing, 14-17 November 1995.

Geometry of Hydraulic Fractures Induced From Horizontal Wellbores - Weijers, et al.: SPEPF (May 1994) 87-92.

Propped Fracture Stimulation in Deviated North Sea Gas Wells - de Pater, et al.: SPE 26794, Offshore Conference, Aberdeen, (1993).

Re-fracs and Fracture Re-orientation

Refracture Orientation Enhances Gas Production in Barnett Shale Tight Gas Wells - Siebrits, et al.: SPE paper 63030 to be presented at the SPE Annual Technical Conference and Exhibition held in Dallas, Texas, 1-4 October 2000.

Fracture Growth and Reorientation in Steam Injection Wells - Weijers, et al.: SPE paper 079 presented at the 1999 International Thermal Operations and Heavy Oil Symposium, Bakersfield, 17-21 March 1999.

Hydraulic Fracture Reorientation in Primary and Secondary Recovery from Low-Permeability Reservoirs - Wright, et al.: SPE paper 30484 presented at the 1995 Annual Technical Conference and Exhibition, Dallas, 22-25 October 1995.

Hydraulic Fracture Orientation and Production/Injection Induced Reservoir Stress Changes in Diatomite Waterfloods - Wright, et al.: SPE paper 29625 presented at the 1995 Western Regional Meeting, Bakersfield, 8-10 March 1995.

Reorientation of Propped Refracture Treatments - Wright, et al.: paper SPE 28078 presented at the 1994 SPE/ISRM Rock Mechanics in Petroleum Engineering Conference, Delft, The Netherlands, 29-31 August 1994.

Reorientation of Propped Refracture Treatments in the Lost Hills Field - Wright, et al.: SPE paper 276 presented at the 1994 Western Regional Meeting in Long Beach, 23-25 March 1994.

On-Site Real-Time Analysis Allows Optimal Propped Fracture Stimulation of a Complex Gas Reservoir - Johnson, et al.: SPE paper 214 presented at the 1993 Production Operations Symposium, Oklahoma City, 21-23 March 1993.

Hydraulic Fracture Reorientation in Model Tests - Weijers, et al.: paper SPE 23790 presented at the 1992 Formation Damage Control Symposium, Lafayette, 26-27 February 1992.

Reservoir Monitoring

Precise Tiltmeter Subsidence Monitoring Enhances Reservoir Management - Davis, et al.: SPE paper 62577 presented at SPE/AAPG Western Regional Meeting held in Long Beach, California, 19-23 June 2000

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Identification and Implications of Induced Hydraulic Fractures in Waterfloods:

Case History HGEU - Griffin, et al.: SPE 59525 presented at the SPE Permian Basin Oil and Gas Recovery Conference held in Midland, Texas, 21-23 March 2000.

Geothermal Reservoirs

Real-Time and Post-Frac 3-D Analysis of Hydraulic Fracture Treatments in

Geothermal Reservoirs - Wright, et al.: presented at the 1994 Stanford Geothermal Conference, Stanford University, Palo Alto, Jan.

An HDR System Hydraulics Model and Detailed Analysis of the 1991 Circulation Test at the Hijiori HDR Site, Japan - Takasugi, et al.: presented at the Geothermal Resources Council Annual Meeting, Reno, 8-11 October 1995.

Waterfloods

Identification and Implications of Induced Hydraulic Fractures in Waterfloods:

Case History HGEU - Griffin, et al.: SPE 59525 presented at the SPE Permian Basin Oil and Gas Recovery Conference held in Midland, Texas, 21-23 March 2000.

Hydraulic Fracture Orientation and Production/Injection Induced Reservoir Stress Changes in Diatomite Waterfloods - Wright, et al.: SPE paper 29625 presented at the 1995 Western Regional Meeting, Bakersfield, 8-10 March 1995.

Waste and Drill cuttings Injection

Surface and Downhole Tiltmeter Mapping: An Effective Tool for Monitoring

Downhole Drill Cuttings Disposal - Griffin, et al.: SPE paper 63032 to be presented at the SPE Annual Technical Conference and Exhibition held in Dallas, Texas, 1-4 October 2000.

The Mounds Drill-Cuttings Injection Field Experiment: Final Results and

Conclusions - Moschovidis, et al.: SPE paper 59115 presented at the 2000 IADC/SPE Drilling Conference held in New Orleans, Louisiana, 23-25 February 2000.

Tiltmeter Mapping to Monitor Drill Cuttings Disposal - Griffin, et al.: presented at the 37th U.S. Rock Mechanics Symposium, Vail, 6-9 June 1999.

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