Development and evaluation of a novel fracture diverting agent for high temperature reservoirs

Zhang, Yuyuan1,2; Zhang, Dongxiao3; Wen, Qingzhi1,2; Zhang, Wei1,2; Zheng, Shuai1,2

2021-09-01

10.1016/j.jngse.2021.104074

Journal of Natural Gas Science and Engineering   影响因子和分区

1875-5100

2212-3865

Diversion fracturing has attracted increasing attention to satisfy the rising demand for hydrocarbon resources. In this study, a novel targeted-plugging and fracture-adaptable diverting system applicable for high temperature (150 degrees C) was developed, which was based on gel, fibers, and coal fly ash (CFA). Gel was used as the matrix and carrier of other constituents, while fibers and CFA assisted to strengthen the structure of the diverting system. This system could plug at designated positions and be applied to complex fracture networks. By adding different compositions and modifying ambient conditions, the gelation time could be varied to adjust the plugging position. Gelation time could be controlled from 10 min to 45 min, which was sufficiently long for field application. Plugging and degradation behavior tests were conducted to confirm that the system could form plugs and finally become degraded under 150 degrees C.

Fracturing Refracturing Diverting agents High temperature Plugging behavior

SCI ; EI

英语

通讯

Shenzhen Key Laboratory of Natural Gas Hydrates[ZDSYS20200421111201738]

Energy & Fuels ; Engineering

Energy & Fuels ; Engineering, Chemical

WOS:000663574000002

ELSEVIER SCI LTD

20212410507791

Fly ash ; Gelation ; Petroleum reservoir evaluation

Petroleum Deposits : Development Operations:512.1.2 ; Chemical Operations:802.3 ; Materials Science:951

Web of Science

1.Peking Univ, Coll Engn, ERE, BIC ESAT, Beijing, Peoples R China
2.Peking Univ, Coll Engn, SKLTCS, Beijing, Peoples R China
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China

Zhang, Yuyuan,Zhang, Dongxiao,Wen, Qingzhi,et al. Development and evaluation of a novel fracture diverting agent for high temperature reservoirs[J]. Journal of Natural Gas Science and Engineering,2021,93.

Zhang, Yuyuan,Zhang, Dongxiao,Wen, Qingzhi,Zhang, Wei,&Zheng, Shuai.(2021).Development and evaluation of a novel fracture diverting agent for high temperature reservoirs.Journal of Natural Gas Science and Engineering,93.

Zhang, Yuyuan,et al."Development and evaluation of a novel fracture diverting agent for high temperature reservoirs".Journal of Natural Gas Science and Engineering 93(2021).