Results 51 to 60 of about 5,091 (191)

Complex Fracture Networks Prohibit Safe Fracturing Fluid Recovery

Engineering Reports, Volume 7, Issue 2, February 2025.
ABSTRACT The recovery of fracturing fluid (HF), necessary for subsurface energy production and carbon storage, is generally low, raising concerns about HF fate in the subsurface and its potential to contaminate water aquifers. This study examines the migration of fracturing fluid and tracks its distribution in fractured reservoirs using a two ...
S. Makki, A. Yehya, E. Maalouf
wiley   +1 more source

NMR‐Based Quantitative Characterization of Water Imbibition in Deep Shale Rocks Under Different Pressures and Temperatures

Geofluids, Volume 2025, Issue 1, 2025.
Unconventional tight/shale gas reservoirs have gained significant attention in the energy sector. The importance of temperature and pressure in shale imbibition lies in their profound influence on the kinetics, rate, and ultimate amount of water uptake, which directly impacts the efficiency of gas production.
Kaishuo Yang, Cheng Chang, Weiyang Xie, Yizhao Chen, Xingchen Wang, Fanxiang Xu, Xinhao Gong, Dunqing Liu, Tianshou Ma   +8 more
wiley   +1 more source

Flow Simulation and Influence Factors Analysis of CO2 Foam Fracturing in Annulus Injection

Frontiers in Earth Science, 2022
CO2 foam fracturing fluid is widely used in unconventional oil and gas production because of its easy flowback and low damage to the reservoir. Nowadays, the fracturing process of CO2 foam fracturing fluid injected by coiled tubing is widely used ...
Hao Li, Genbo Peng
doaj   +1 more source

Field experiments of different fracturing designs in tight conglomerate oil reservoirs

Scientific Reports, 2022
Mahu oilfield is currently the largest tight conglomerate reservoir in the world, where Ma-131 and Ma-18 plays are the first two commercially developed reservoirs.
Daiyan Zhang, Shiying Ma, Jing Zhang, Yue Zhu, Bin Wang, Jian Zhu, Xibin Fan, Hu Yang, Tianbo Liang   +8 more
doaj   +1 more source

The Calculation of Coal Rock Fracture Conductivity with Different Arrangements of Proppants

Geofluids, 2018
An accurate evaluation of coal rock fracture conductivity is an important prerequisite for predicting the productivity of CBM wells. Coal rock is soft and fragile, with low elastic modulus and high Poisson ratio.
Yuwei Li, Wannong Meng, Ray Rui, Jinghui Wang, Dan Jia, Gang Chen, Shirish Patil, Abhijit Dandekar   +7 more
doaj   +1 more source

Microwave‐sintered mullite structural ceramics based on low‐grade bauxite applied for fracturing proppants

Energy Science &Engineering, Volume 12, Issue 8, Page 3243-3257, August 2024.
This paper investigates the strength characteristics and fracture propagation process of coal and rock under bending load. The evolutionary rules of strain energy for coal and rock were calculated and obtained. The fracture mechanism of coal and rock was discussed by analyzing the critical strain energy release rate. Abstract This study aimed to assess
Xiaogang Li, Junya Xiong, Zhaozhong Yang, Jinyi Zhu, Weizhe Li   +4 more
wiley   +1 more source

Advances in research on mechanisms and prevention and control technologies for solid-phase production in hydraulically fractured coalbed methane wells

Meitian dizhi yu kantan
Background The effective coalbed methane (CBM) exploitation using hydraulic fracturing wells is severely constrained by two major solid-phase production issues: coal fines blockage and proppant flowback.
Fengsan ZHANG, Jinqiao WU, Jin LIN, Yu LI, Ying ZHANG, Bing LI, Guobiao ZHANG, Ying SUN, Yuke GAN   +8 more
doaj   +1 more source

A new type of experimentally proposed in situ heat/gas clean foam fracturing fluid system

Journal of Petroleum Exploration and Production Technology, 2020
When cold fluid is injected into low-temperature, low-pressure, low-permeability reservoirs containing wax-bearing heavy oil, cryogenic paraffin deposition and heavy oil condensation will occur, thus damaging the formation.
Kuangsheng Zhang, Zhenfeng Zhao, Meirong Tang, Wenbin Chen, Chengwang Wang, Xinyu Mao, Nianyin Li   +6 more
doaj   +1 more source

Practice and development suggestions of hydraulic fracturing technology in the Gulong shale oil reservoirs of Songliao Basin, NE China

Petroleum Exploration and Development, 2023
This paper reviews the multiple rounds of upgrades of the hydraulic fracturing technology used in the Gulong shale oil reservoirs and gives suggestions about stimulation technology development in relation to the production performance of Gulong shale oil
He LIU, Youquan HUANG, Meng CAI, Siwei MENG, Jiaping TAO   +4 more
doaj   +1 more source

Long‐term fracture conductivity in tight reservoirs

Energy Science &Engineering, Volume 12, Issue 3, Page 1187-1199, March 2024.
The fracture conductivity decreases with the increase of displacement time under the displacement of formation water and fracturing fluid, and the decrease of fracture conductivity under the displacement of fracturing fluid with time is greater than that of formation water displacement. The conductivity increases with the increase of sand concentration,
Chuanliang Yan, Penghui Zhang, Leifeng Dong, Chuang Zhang, Yuanfang Cheng   +4 more
wiley   +1 more source