-
公开(公告)号:US11453812B2
公开(公告)日:2022-09-27
申请号:US17317406
申请日:2021-05-11
发明人: Guancheng Jiang , Yinbo He , Lili Yang , Tengfei Dong , Xiaohu Quan , Kai Wang , Chunyao Peng , Xuwu Luo , Bin Tan , Jun Cai , Xing Liang , Zhiliang You , Yong Wang
摘要: The invention relates to the field of drilling fluid, in particular to a saturated salt water drilling fluid of salt response type intelligent polymer and preparation method thereof. The drilling fluid contains two or more of the following components stored in admixture or separately: bentonite, NaOH, KCl, calcium carbonate, barite, NaCl, supramolecular fluid loss additive, supramolecular shear-enhancing agent, plugging agent, coating agent and water. The drilling fluid provided by the invention has the characteristics of salt response and self-assembly, can keep rheological properties such as rapid recovery of the sheared structure, low extreme high shear rate viscosity, good shear dilution property and the like in a high-salt environment, has good fluid loss reduction performance, reservoir protection performance and debris dispersion inhibition performance, and has good temperature resistance and pollution resistance performance.
-
公开(公告)号:US20220204833A1
公开(公告)日:2022-06-30
申请号:US17696549
申请日:2022-03-16
发明人: Yinbo He , Guancheng Jiang , Lili Yang , Tengfei Dong , Bin Tan , Rongchao Cheng , He Shi , Jianguo Zhang , Tie Geng , Jiansheng Luo , Dongmin Jia , Kai Wang , Chunlin Xie , Wuquan Li , Xiaoqing Li
IPC分类号: C09K8/508 , C08F212/08 , C08F222/08 , C08L33/26 , C09K8/512
摘要: The invention relates to the technical field of oil and gas drilling, and discloses an amphiphilic block polymer ultralow-permeability agent and an intelligent temporary plugging type water-based drilling fluid. The ultralow-permeability agent contains a structural unit provided by styryl hydrophobic monomer, maleic anhydride and acrylamide; the drilling fluid contains two or more of water, sodium bentonite, Pac-Lv, the ultralow-permeability agent, calcium carbonate, one-way plugging agent, white asphalt and barite which are stored in a mixed manner or independently stored. When the amphiphilic block polymer provided by the invention is used as the ultralow-permeability agent of the intelligent temporary plugging type water-based drilling fluid, the self-adaptive characteristic is realized; according to the amphiphilic block polymer, temporary plugging layer gaps formed in pore and throats by plugging materials in drilling fluid can be fully filled under the condition that the sizes and the distribution of the pore and throats of reservoirs are not required to be clear, so that the permeability of temporary plugging layer is greatly reduced, ultralow-permeability is realized, and the amphiphilic block polymer is weak in tackifying effect, has gel-improving effect and can improve the rheological property of the drilling fluid.
-
公开(公告)号:US11136488B1
公开(公告)日:2021-10-05
申请号:US17228424
申请日:2021-04-12
发明人: Guancheng Jiang , He Shi , Kaixiao Cui , Yinbo He , Lili Yang , Tengfei Dong , Chunyao Peng , Xuwu Luo , Bin Tan , Jun Cai , Xing Liang , Zhiliang You , Yong Wang
IPC分类号: C09K8/36 , C08G63/685 , C08G63/78
摘要: The present invention relates to the technical field of oil and gas drilling, and discloses a biodiesel-based constant rheological property drilling fluid containing intelligent temperature responsive polymer, which contains two or more of the following components which are stored in admixture or separately: base oil biodiesel, aqueous phase, emulsifier, organic soil, constant rheological property flow pattern modifier, hydrolysis inhibitor, filtrate reducer and weighting material; the constant rheological property flow pattern modifier is an intelligent temperature responsive polymer, and the polymer contains structural units provided by bis-hydroxyethyl bis-hydroxypropyl stearyl ammonium chloride, ethylene bis-stearamide and dimerized fatty acid. The drilling fluid provided by the present invention has excellent environmental protection property and degradability, and has conventional rheological property, weak gel structure and fluid loss property which are equivalent to those of the conventional oil-based drilling fluid, and also has excellent temperature resistance, CaO compatibility and constant rheological property.
-
公开(公告)号:US11578251B2
公开(公告)日:2023-02-14
申请号:US17696549
申请日:2022-03-16
发明人: Yinbo He , Guancheng Jiang , Lili Yang , Tengfei Dong , Bin Tan , Rongchao Cheng , He Shi , Jianguo Zhang , Tie Geng , Jiansheng Luo , Dongmin Jia , Kai Wang , Chunlin Xie , Wuquan Li , Xiaoqing Li
IPC分类号: C09K8/508 , C08F212/08 , C08F222/08 , C08L33/26 , C09K8/512
摘要: The invention relates to the technical field of oil and gas drilling, and discloses an amphiphilic block polymer ultralow-permeability agent and an intelligent temporary plugging type water-based drilling fluid. The ultralow-permeability agent contains a structural unit provided by styryl hydrophobic monomer, maleic anhydride and acrylamide; the drilling fluid contains two or more of water, sodium bentonite, Pac-Lv, the ultralow-permeability agent, calcium carbonate, one-way plugging agent, white asphalt and barite which are stored in a mixed manner or independently stored. When the amphiphilic block polymer provided by the invention is used as the ultralow-permeability agent of the intelligent temporary plugging type water-based drilling fluid, the self-adaptive characteristic is realized; according to the amphiphilic block polymer, temporary plugging layer gaps formed in pore and throats by plugging materials in drilling fluid can be fully filled under the condition that the sizes and the distribution of the pore and throats of reservoirs are not required to be clear, so that the permeability of temporary plugging layer is greatly reduced, ultralow-permeability is realized, and the amphiphilic block polymer is weak in tackifying effect, has gel-improving effect and can improve the rheological property of the drilling fluid.
-
公开(公告)号:US11326450B2
公开(公告)日:2022-05-10
申请号:US17345904
申请日:2021-06-11
发明人: Guancheng Jiang , Xiongjun Wu , Lili Yang , Yinbo He , Tengfei Dong , Xiaohu Quan , Chunyao Peng , Xuwu Luo , Bin Tan , Jun Cai , Xing Liang , Zhiliang You , Yong Wang , Bin Li , Yongbin Guo , Shen Guan
IPC分类号: G06N3/08 , G01V99/00 , E21B49/08 , E21B49/00 , E21B47/003 , G06N3/04 , G06Q10/04 , G06Q50/02 , G01V1/28 , G06Q10/06 , E21B43/00 , G06F7/60 , E21B43/16 , E21B41/00
摘要: The embodiments of the invention provide an intelligent prediction method and apparatus for reservoir sensitivity, belonging to the technical field of reservoir sensitivity prediction. The method includes: acquiring a reservoir sensitivity influence factor item related to a reservoir sensitivity result to be predicted and numerical values of corresponding reservoir sensitivity influence factors; determining a corresponding type of database according to the reservoir sensitivity influence factor item; determining whether numerical values of reservoir sensitivity influence factors corresponding to core parameters in the numerical values of the reservoir sensitivity influence factors include a first upper boundary value or a first lower boundary value; and using, according to whether the first upper boundary value or the first lower boundary value is included, different intelligent sensitivity prediction models to calculate the reservoir sensitivity result to be predicted.
-
-
-
-