Pressure characteristics and performance of multi-stage fractured horizontal well in shale gas reservoirs with coupled flow and geomechanics

被引：22

作者：

Guo, Xuyang ^{[1
,2
]}

Song, Hongqing ^{[1
,2
]}

Wu, Kan ^{[2
]}

Killough, John ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, 30 Xueyuan Rd, Beijing, Peoples R China

[2] Texas A&M Univ, Dept Petr Engn, 3116 TAMU, College Stn, TX 77840 USA

来源：

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING | 2018年 / 163卷

基金：

中国国家自然科学基金;

关键词：

Coupled flow and geomechanics; Shale gas flow; Multi-stage fractures; Reservoir performance; Finite element method;

D O I：

10.1016/j.petrol.2017.12.038

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Multi-stage hydraulic fracturing is a crucial well completion strategy in unconventional reservoirs to improve hydrocarbon production. Reservoir performance and pressure characterization in multi-stage fracture development considering elastic rock mechanics are not systematically discussed in the literature. This work considers effects of elastic rock mechanics and hydraulic fractures in unconventional reservoir development scenarios using a numerical model with coupled fluid flow and geomechanics. A fully coupled flow and geomechanics model based on finite element method is introduced to analyze shale gas flow and corresponding pressure distribution in unconventional reservoirs. The model is validated with an analytical solution and history matched with field data. Furthermore, effects of rock mechanics, elastic properties, and hydraulic fracture geometry on reservoir performance and pressure distribution are studied using the fully coupled numerical model. Pressure distribution and reservoir performance in terms of production rates of these scenarios are analyzed. It is found that consideration of elastic rock mechanics decreases the hydrocarbon production rates and alters the pressure distribution in the unconventional reservoir. Rock mechanical properties and fracture spacing/length also affect flow rates and pressure. Fracture spacing, fracture length, and Young's modulus have the greatest effect on hydrocarbon production rates. Effects of elastic rock mechanics are most significant at central areas of the fractured region, while such effects are less significant at far ends of the horizontal wellbore. This work incorporates full geomechanics with a flow model to understand reservoir performance and pressure characterization in multi-stage hydraulic fracture development scenarios and quantifies effects of geomechanics and effects of various parameters in unconventional development scenarios.

引用

页码：1 / 15

页数：15

共 28 条

[11] A REMARK ON THE ANALOGY BETWEEN THERMOELASTICITY AND THE ELASTICITY OF SATURATED POROUS MEDIA [J].

GEERTSMA, J .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1957, 6 (01) :13-16

[12]

Guo X., 2017, SPE RES SIM C MONTG

[13]

Gupta J.K., 2012, SPE HYDR FRACT TECHN

[14]

McNamee J., 1960, Q J MECH APPL MATH, V13, P98, DOI DOI 10.1093/QJMAM/13.1.98

[15]

Miller M. A., 2010, SPE E REG M SOC PETR

[16] Coupled fluid flow and geomechanical deformation modeling [J].

Minkoff, SE ;

Stone, CM ;

Bryant, S ;

Peszynska, M ;

Wheeler, MF .

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 2003, 38 (1-2) :37-56

[17] A sequential implicit discrete fracture model for three-dimensional coupled flow-geomechanics problems in naturally fractured porous media [J].

Moradi, Mostafa ;

Shamloo, Amir ;

Dezfuli, Alireza Daneh .

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 2017, 150 :312-322

[18]

Nagel N., 2013, SPE UNC RES C CAN SO

[19] INTERPRETATION OF WELL-BLOCK PRESSURES IN NUMERICAL RESERVOIR SIMULATION [J].

PEACEMAN, DW .

SOCIETY OF PETROLEUM ENGINEERS JOURNAL, 1978, 18 (03) :183-194

[20] Optimizing Fracture Spacing and Sequencing in Horizontal-Well Fracturing [J].

Roussel, Nicolas R. ;

Sharma, Mukul M. .

SPE PRODUCTION & OPERATIONS, 2011, 26 (02) :173-184

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