Post-Fracturing Evaluation of a Hydraulic-Fractured Well Using Well Testing Interpretation

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2011 Vol.48, Issue 4 Preview Page Next Page

Post-Fracturing Evaluation of a Hydraulic-Fractured Well Using Well Testing Interpretation 수압파쇄 생산정에서 유정시험을 통한 사후 평가: 정승필
SeungPil Jung

31 August 2011. pp. 493-498

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Abstract

Hydraulic fracturing is a technique to fracture low-permeability reservoir by injecting special engineered fluids at high pressure. Through this technique, both of reserves and production volume can be increased. Post-fracture evaluation is an important work because it can support not only to conduct another hydraulic fracturing of adjacent wells but also to develop a drilling strategy for optimized production. Post-fracture evaluation method can be divided into direct method, which detects fractures geophysically, and indirect method such as well testing interpretation and production analysis. In this paper, post-fracture evaluation is conducted by well testing interpretation and production analysis. As a result, it is confirmed that vertical fracture was created effectively so it enhances production rate of the well. Therefore it can be concluded that this hydraulic fracturing was conducted successfully.

Keywords

Hydraulic fracturing

Well testing

Post-fracture evaluation

수압파쇄법은 투과도가 좋지 않아 생산성이 낮은 유정에 높은 압력으로 유체를 주입하여 인위적으로 균열을 발생시키는 방법이다. 이러한 방법을 통해 매장량과 생산량을 동시에 늘릴 수 있다. 수압파쇄 후 그 결과를 평가하는 것은 향후 인접 유정에 대해 수압파쇄를 수행할 때 기준이 될 뿐만 아니라 전체 필드에서 생산정 시추에 대한 전략을 수립할 때 중요한 역할을 한다. 수압파쇄 후 평가하는 방법은 지구물리적인 방법으로 생성된 균열을 탐지하는 직접적인 방법과 유정시험 및 생산량을 분석하는 간접적인 방법이 있다. 이 연구에서는 수압파쇄 적용 후 유정시험 및 생산량에 대한 분석을 통해 수압파쇄 작업 결과를 평가하였다. 그 결과 유정 주위에 균열이 양호하게 생성되었으며 생산량이 급증하여 성공적인 수압파쇄 작업이었음을 확인하였다.

키워드

수압파쇄

유정시험

수압파쇄 사후 평가

References

나승훈, 박흥준, 성원모, 1995, “자동형태곡선중첩 모델을 이용한 유정시험자료의 해석,” 한국자원공학회지, 제32권 4호, pp. 286-292.
성원모, 유인항, 1995, “HT-인공지능기법을 이용한 유정ㆍ가스정 시험자료 해석모델의 결정,” 한국자원공학회지, 제32권 2호, pp. 143-150.
한국석유공사 기술개발실, 2007, 수압파쇄 사후평가기법연구(II), 한국석유공사.
Cinco-Ley, H. and Samaniego-V., F., 1981, “Transient Pressure Analysis for Fractured Wells,” SPE 7490, JPT, Vol. 33, No. 9, pp. 1749-1766.
Cinco-Ley, H., Samaniego-V., F. and Dominguez, N., 1976, “Transient Pressure Behavior for a Well with a Finite Conductivity Vertical Fracture,” SPE 6014, Proc. of SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, Oct 3-6, pp. 253-264.
Cipolla, C.L. and Wright, C.A., 2000, “State-of-the-Art in Hydraulic Fracture Diagnostics,” SPE 64434, Proc. of SPE Asia Pacific Oil and Gas Conference and Exhibition, Brisbane, Austrailia, Oct 16-18.
Daaneshy, A., 1995, “Economics of Damage Removal and Production Enhancement,” SPE 30234, SPE European Formation Damage Conference, The Hague, Netherlands, May 15-16.
Gringarten, A.C. and Ramey, H.J. Jr., 1973, “The Use of Source and Green’s Functions in Solving Unsteady Flow Problems in Reservoirs,” SPEJ, Vol. 13, No. 5, pp. 285-296.
Hari, R. and Laun, L., 2010, “Improvements in Multistage Fracturing of Horizontal Wells Using a Newly Introduced Single Trip Coiled Tubing Conveyed Annular Perforating and Fracturing Tool - Benefits, Savings, and Case Histories,” SPE 127738, Proc. of IADC/SPE Drilling Conference and Exhibition, New Orleans, Louisiana, Feb. 2-4.
Hopkins, C.W., Gatens III, J.M., Caballero, J.S. and Jankura, B.E., 1993, “Stimulation Optimization in a Low-Permeability Upper Devonian Sandstone Reservoir: A Case History,” SPE 21499, SPE Advanced Technology Series, pp. 182-190.
Horn, R.N., 1995, Modern Well Test Analysis: A computer-Aided Approach, 2nd Ed., Petroway Inc., California, USA, p. 27.
Larkin, S.D., Brown, E.K., Bazan, L.W., Manuel, G.W. and Becnel, J.L., 2002, “Stimulation Design and Post Fracture Production Analysis: A Tight Gas Sand Case History,” SPE 74361, SPE International Petroleum Conference and Exhibition in Mexico, Villahermosa, Mexico, Feb. 10-12.
McGuire, W.J. and Sikora, V.T., 1960, “The Effect of Vertical Fractures on Well Productivity,” SPE 1618, Trans. AIME, Vol. 219, pp 401-403.
Muskat, M., 1934, The Flow of Homogeneous Fluids Through Porous Media, McGraw-Hill Book Co., New York, USA, pp. 225-227.
Prats, M., 1961, “Effect of Vertical Fractures on Reservoir Behavior - Incompressible Fluid Case,” SPE 1575, Trans. AIME, Vol. 222, pp. 71-78.
Russell, D.G. and Truitt, N.E., 1964, “Transient Pressure Behavior in Vertically Fractured Reservoirs,” SPE 967, JPT, Vol. 16, pp. 1159-1170.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society for Geosystem Engineering
Journal Title(Ko) :한국지구시스템공학회지
Volume : 48
No :4
Pages :493-498

[1] 나승훈, 박흥준, 성원모, 1995, “자동형태곡선중첩 모델을 이용한 유정시험자료의 해석,” 한국자원공학회지, 제32권 4호, pp. 286-292.

[2] 성원모, 유인항, 1995, “HT-인공지능기법을 이용한 유정ㆍ가스정 시험자료 해석모델의 결정,” 한국자원공학회지, 제32권 2호, pp. 143-150.

[3] 한국석유공사 기술개발실, 2007, 수압파쇄 사후평가기법연구(II), 한국석유공사.

[4] Cinco-Ley, H. and Samaniego-V., F., 1981, “Transient Pressure Analysis for Fractured Wells,” SPE 7490, JPT, Vol. 33, No. 9, pp. 1749-1766.

[5] Cinco-Ley, H., Samaniego-V., F. and Dominguez, N., 1976, “Transient Pressure Behavior for a Well with a Finite Conductivity Vertical Fracture,” SPE 6014, Proc. of SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, Oct 3-6, pp. 253-264.

[6] Cipolla, C.L. and Wright, C.A., 2000, “State-of-the-Art in Hydraulic Fracture Diagnostics,” SPE 64434, Proc. of SPE Asia Pacific Oil and Gas Conference and Exhibition, Brisbane, Austrailia, Oct 16-18.

[7] Daaneshy, A., 1995, “Economics of Damage Removal and Production Enhancement,” SPE 30234, SPE European Formation Damage Conference, The Hague, Netherlands, May 15-16.

[8] Gringarten, A.C. and Ramey, H.J. Jr., 1973, “The Use of Source and Green’s Functions in Solving Unsteady Flow Problems in Reservoirs,” SPEJ, Vol. 13, No. 5, pp. 285-296.

[9] Hari, R. and Laun, L., 2010, “Improvements in Multistage Fracturing of Horizontal Wells Using a Newly Introduced Single Trip Coiled Tubing Conveyed Annular Perforating and Fracturing Tool - Benefits, Savings, and Case Histories,” SPE 127738, Proc. of IADC/SPE Drilling Conference and Exhibition, New Orleans, Louisiana, Feb. 2-4.

[10] Hopkins, C.W., Gatens III, J.M., Caballero, J.S. and Jankura, B.E., 1993, “Stimulation Optimization in a Low-Permeability Upper Devonian Sandstone Reservoir: A Case History,” SPE 21499, SPE Advanced Technology Series, pp. 182-190.

[11] Horn, R.N., 1995, Modern Well Test Analysis: A computer-Aided Approach, 2nd Ed., Petroway Inc., California, USA, p. 27.

[12] Larkin, S.D., Brown, E.K., Bazan, L.W., Manuel, G.W. and Becnel, J.L., 2002, “Stimulation Design and Post Fracture Production Analysis: A Tight Gas Sand Case History,” SPE 74361, SPE International Petroleum Conference and Exhibition in Mexico, Villahermosa, Mexico, Feb. 10-12.

[13] McGuire, W.J. and Sikora, V.T., 1960, “The Effect of Vertical Fractures on Well Productivity,” SPE 1618, Trans. AIME, Vol. 219, pp 401-403.

[14] Muskat, M., 1934, The Flow of Homogeneous Fluids Through Porous Media, McGraw-Hill Book Co., New York, USA, pp. 225-227.

[15] Prats, M., 1961, “Effect of Vertical Fractures on Reservoir Behavior - Incompressible Fluid Case,” SPE 1575, Trans. AIME, Vol. 222, pp. 71-78.

[16] Russell, D.G. and Truitt, N.E., 1964, “Transient Pressure Behavior in Vertically Fractured Reservoirs,” SPE 967, JPT, Vol. 16, pp. 1159-1170.

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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