 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12854 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
|
| In English (Mech. Solids): | | 4810 |
|
| << Previous article | Volume 52, Issue 3 / 2017 | Next article >> |
| T.M. Bondarenko, B. Hou, M. Chen, and L. Yan, "Laboratory Research of Fracture Geometry in Multistage HFF in Triaxial State," Mech. Solids. 52 (3), 289-298 (2017) |
| Year |
2017 |
Volume |
52 |
Number |
3 |
Pages |
289-298 |
| DOI |
10.3103/S0025654417030062 |
| Title |
Laboratory Research of Fracture Geometry in Multistage HFF in Triaxial State |
| Author(s) |
T.M. Bondarenko (State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum-Beijing, Fuxue Road 18, Changping, Beijing, 102249 China, tbondarenko91@mail.ru)
B. Hou (State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum-Beijing, Fuxue Road 18, Changping, Beijing, 102249 China)
M. Chen (State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum-Beijing, Fuxue Road 18, Changping, Beijing, 102249 China)
L. Yan (State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum-Beijing, Fuxue Road 18, Changping, Beijing, 102249 China) |
| Abstract |
Multistage hydraulic fracturing of formation (HFF) in wells with horizontal completion is an efficient method for intensifying oil extraction which, as a rule, is used to develop nontraditional collectors. It is assumed that the complicated character of HFF fractures significantly influences the fracture geometry in the rock matrix. Numerous theoretical models proposed to predict the fracture geometry and the character of interaction of mechanical stresses in the multistage HFF have not been proved experimentally. In this paper, we present the results of laboratory modeling of the multistage HFF performed on a contemporary laboratory-scale plant in the triaxial stress state by using a gel-solution as the HFF agent. As a result of the experiment, a fracturing pattern was formed in the cubic specimen of the model material. The laboratory results showed that a nearly plane fracture is formed at the first HFF stage, while a concave fracture is formed at the second HFF stage. The interaction of the stress fields created by the two principal HFF fractures results in the growth of secondary fractures whose directions turned out to be parallel to the modeled well bore. But this stress interference leads to a decrease in the width of the second principal fracture. It is was discovered that the penny-shaped fracture model is more appropriate for predicting the geometry of HFF fractures in horizontal wells than the two-dimensional models of fracture propagation (PKN model, KGD model). A computational experiment based on the boundary element method was carried out to obtain the qualitative description of the multistage HFF processes. As a result, a mechanical model of fracture propagation was constructed, which was used to obtain the mechanical stress field (the stress contrast) and the fracture opening angle distribution over fracture length and fracture orientation direction. The conclusions made in the laboratory modeling of the multistage HFF technology agree well with the conclusions made in the computational experiment. Special attention must be paid to the design of the HFF stage spacing density in the implementation of the multistage HFF in wells with horizontal completion. |
| Keywords |
HFF fracture, horizontal well, fracture geometry, HFF stage spacing density |
| References |
| 1. | M. K. Fisher, C. A. Wright, B. M. Davidson, and E. O. Fielder,
"Integrating Fracture Mapping Technologies to Improve Stimulations in the Barnett Shale,"
in SPE Ann. Techn. Conf. Exhibition. 29 September - 2 October 2002,
San Antonio, Texas, USA
(SPE, 2002),
SPE-77441-MS. |
| 2. | J. F. W. Gale, R. M. Reed, and J. Holder,
"Natural Fractures in the Barnett Shale and Their Importance
for Hydraulic Fracture Treatments,"
AAPG Bull.
91, 603-622 (2007). |
| 3. | R. Wu and O. Kresse,
"Modeling of Interaction of Hydraulic Fractures in Complex Fracture Networks,"
in SPE Hydraulic Fracturing Technology Conf. 6-8 February 2012. The Woodlands, Texas, USA
(SPE, 2012),
SPE-152052-MS. |
| 4. | C. M. Jonathan and L. M. Jennifer,
"Optimizing Hydraulic Fracture Spacing in Unconventional Shales,"
in SPE Hydraulic Fracturing Technology Conf. 6-8 February 2012. The Woodlands, Texas, USA
(SPE, 2012),
SPE-152595-MS. |
| 5. | J. Yin, J. Guo, and F. Zeng,
"Perforation Spacing Optimization for Staged Fracturing of Horizontal Well,"
Petrol. Drill. Techn.
40 (5) 67-71 (2012). |
| 6. | W. Cheng, Y. Jin, M. Chen, and B. Hou,
"An Approach to Design Fracture Spacing in Horizontal-Well Multi-Stage Fracturing
and Factors Analysis in Shale Reservoir,"
Sci. Techn. Engng
14, 1671-1815 (2014). |
| 7. | M. Y. Soliman and E. Loyd,
"Geomechanics Aspects of Multiple Fracturing of Horizontal and Vertical Wells,"
in SPE Int. Thermal Operations and Heavy Oil Symposium and Western Regional Meeting. 16-18 March 2004. Bakersfield, California, USA
(SPE, 2004),
SPE-86992-PA. |
| 8. | P. R. Nicolas and M. S. Mukul,
"Strategies to Minimize Frac Spacing and Stimulate Natural Fractures in Horizontal Completions,"
in SPE Ann. Techn. Conf. Exhibition. 30 October - 2 November 2011. Denver, Colorado, USA
(SPE, 2011),
SPE-146104-MS. |
| 9. | Y. Cheng,
"Boundary Element Analysis of the Stress Distribution around Multiple Fractures:
Implications for the Spacing of Perforation Clusters of Hydraulically Fractured Horizontal Wells,"
in SPE Eastern Regional Meeting. 23-25 September 2009. Charleston, West Virginia, USA
(SPE, 2009)
SPE-125769-MS. |
| 10. | A. P. Bunger, X. Zhang, and R. G. Jeffrey,
"Parameters Affecting the Interaction among Closely Spaced Hydraulic Fractures,"
in SPE Hydraulic Fracturing Technology Conf. 4-26 January 2011. The Woodlands, Texas, USA
(SPE, 2011),
SPE-140426-PA. |
| 11. | J. Hyunil,
"Optimizing Fracture Spacing to Induce Complex Fractures
in a Hydraulically Fractured Horizontal Wellbore,"
in Americas Unconventional Resources Conf. 5-7 June 2012. Pittsburgh, Pennsylvania, USA
(SPE, 2012),
SPE-154930-MS. |
| 12. | N. P. Roussel and M. M. Sharma,
"Optimizing Fracture Spacing and Sequencing in Horizontal Well Fracturing,"
in SPE Int. Symp. Exhibition Formation Damage Control.
10-12 February 2010. Lafayette, Louisiana, USA
(SPE, 2010),
SPE-127986-PA. |
| 13. | P. N. Mutalik and G. Bob,
"Case History of Sequential and Simultaneous Fracturing of the Barnett Shale in Parker County,"
in SPE Ann. Conf. Exhibition. 21-24 September 2008. Denver, Colorado, USA
(SPE, 2008),
SPE-116124-MS. |
|
| Received |
02 February 2015 |
| Link to Fulltext |
|
| << Previous article | Volume 52, Issue 3 / 2017 | Next article >> |
|
 If you find a misprint on a webpage, please help us correct it promptly - just highlight and press Ctrl+Enter
|
|
Russian 
English