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Title: Advanced Stimulation Technology Deployment Program, Bannon Energy, Inc., Frontier Sand, Moxa Arch Area, Western Wyoming. Topical report, February 1995-January 1996

Abstract

This report describes in detail the application of Advanced Stimulation Technologies by BEI to 80 Frontier-only wells in the Moxa Arch area of southwestern Wyoming. Treatment optimization studies using reservoir simulators and 3D fracture models were performed for the purpose of selecting optimal proppant and fluid volumes. Point-source perforating, net pressure matching for pad optimization and estimation of fracture geometry, and on-site quality control and fluids testing were all performed during the course of the 80 well program in order to optimize the results. Finally, the calculation of benefits using the AST 4-step methodology is discussed in detail in this report.

Authors:
; ; ;
Publication Date:
Research Org.:
Holditch (S.A.) and Associates, Inc., Houston, TX (United States)
OSTI Identifier:
442336
Report Number(s):
PB-97-126924/XAB
CNN: Contract GRI-5094-220-3263; TRN: 70341209
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Jan 1996
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; WELL STIMULATION; RESEARCH PROGRAMS; COMPUTERIZED SIMULATION; HYDRAULIC FRACTURING; TECHNOLOGY TRANSFER; RESERVOIR PRESSURE; NATURAL GAS WELLS; FRACTURE MECHANICS; FRACTURE PROPERTIES; BOREHOLE LINKING; FORMATION DAMAGE; GEOMETRY; RESERVOIR ENGINEERING; WYOMING; GREEN RIVER FORMATION; SANDSTONES; PROGRESS REPORT

Citation Formats

Hopkins, C.W., Voneiff, G.W., Schubarth, S.K., and Chabaud, R. Advanced Stimulation Technology Deployment Program, Bannon Energy, Inc., Frontier Sand, Moxa Arch Area, Western Wyoming. Topical report, February 1995-January 1996. United States: N. p., 1996. Web.
Hopkins, C.W., Voneiff, G.W., Schubarth, S.K., & Chabaud, R. Advanced Stimulation Technology Deployment Program, Bannon Energy, Inc., Frontier Sand, Moxa Arch Area, Western Wyoming. Topical report, February 1995-January 1996. United States.
Hopkins, C.W., Voneiff, G.W., Schubarth, S.K., and Chabaud, R. 1996. "Advanced Stimulation Technology Deployment Program, Bannon Energy, Inc., Frontier Sand, Moxa Arch Area, Western Wyoming. Topical report, February 1995-January 1996". United States. doi:.
@article{osti_442336,
title = {Advanced Stimulation Technology Deployment Program, Bannon Energy, Inc., Frontier Sand, Moxa Arch Area, Western Wyoming. Topical report, February 1995-January 1996},
author = {Hopkins, C.W. and Voneiff, G.W. and Schubarth, S.K. and Chabaud, R.},
abstractNote = {This report describes in detail the application of Advanced Stimulation Technologies by BEI to 80 Frontier-only wells in the Moxa Arch area of southwestern Wyoming. Treatment optimization studies using reservoir simulators and 3D fracture models were performed for the purpose of selecting optimal proppant and fluid volumes. Point-source perforating, net pressure matching for pad optimization and estimation of fracture geometry, and on-site quality control and fluids testing were all performed during the course of the 80 well program in order to optimize the results. Finally, the calculation of benefits using the AST 4-step methodology is discussed in detail in this report.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1996,
month = 1
}

Technical Report:
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  • The scope of the project was to identify and discuss with Snyder`s management and engineering personnel the advantages of using specific AST methods and to train the personnel in using these methods. The comprehensive program initially covered seminars/training sessions on fracture propagation theories, then actual field application of fracturing presssure analysis and evaluation. An integrated completion strategy was created and implemented to (1) complete more pay intervals with pseudo-point source perforated, multiple-staged treatments; (2) modify the borate fluid chemistry to address complicated fracture geometry and improve far-field proppant placement; (3) reduce multiple fracture initiation; and (4) eliminate screen-out problems.
  • This report describes the results from Chevron`s Pakenham Field effort at fracture stimulation engineering which incorporated, to the greatest extent possible, the results of actual measured field data. Measurement of the sand-shale closure stress contrast around the Wolfcamp A2 sand and the relatively high net fracturing pressures (compared to the closure stress contrast) that were observed during real-data (net pressure) fracture treatment analysis revealed that fractures obtained in most of the treatments were much shorter and less confined than originally expected: the fracture half-length was about 200 to 300 ft (instead of about 600 ft), which is consistent with estimatesmore » from post-fracture pressure build-up tests. Based on these measurements, Chevron`s fracturing practices in the Pakenham Field could be carefully reviewed to enhance fracture economics. Supported by the real-data fracture treatment analysis, several changes in completion, fracture treatment design and data-collection procedures were made, such as: (1) using cheaper 20/40 Ottawa sand instead of pre-cured 20/40 resin coated sand; (2) reducing the pad fluid size, as fluid leakoff from the fracture into the formation was relatively low; and, (3) utilizing stepdown tests and proppant slugs to minimize near-wellbore screen-out potential (in the Wolfcamp D sand).« less
  • AST incorporates a process of real collection and real-time analysis/onsite job optimization into the design, implementation, and evaluation of hydraulic fracturing. Several of the critical concepts involved in this process include: (1) real-time data analysis, (2) quality control, (3) stress profiling, and (4) rock mechanics (non-linear rock response). Several new issues have also resulted from the research. These include: (1) the role of fluid rheology, (2) tortuosity, (3) multiple fractures, (4) proppant convection, and (5) bottom-hole-treating-pressure history matching. The main goals of the AST program for J-W were (1) to reinforce GRI technologies in the areas of most interest, (2)more » to demonstrate the application of real-time fracture treatment analysis, and (3) to document the economic benefits J-W is projected to receive from applying AST to the Caspiana Field.« less
  • This report summarizes the activities of Integrated Petroleum Technologies, Inc. in tranferring the core of GRI advanced stimulation technologies to HS Resources, Inc. for application in the Blue Forest Unit, Sweetwater County, Wyoming. The tangible benefits from improved production responses compared to the previous approaches are documented in the report. The technology transfer program focused on workshops/seminars, real-time evaluation of fracture treatment parameters and proppant placement optimization, and detailed post-treatment evaluations.
  • Pinnacle Technologies successfully deployed AST to numerous engineers from Unocal. Unocal estimated an 11% reduction in completion costs after implementing AST on their hydraulic fracture treatments in the Rincon Unit, New Mexico, resulting in a total cost savings of $850,000 on 25 wells. Despite the poorer geology of the newly completed wells, well productivity was equivalent to the older wells with `conventional` fracture treatment designs. Pressure build-up tests also confirmed the improved fracture treatment results: propped fractures of AST-treatments appeared at least twice as long as fractures from conventional treatments, even though completion costs have been reduced.