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Li D, Gao S, Tang Z, Wu H, Zhang Y. Development and Characterization of the Shale Stratum Well Wall Stabilized with Nanosomal Sealing Agent. Polymers (Basel) 2024; 16:1614. [PMID: 38931964 PMCID: PMC11207280 DOI: 10.3390/polym16121614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 05/25/2024] [Accepted: 05/30/2024] [Indexed: 06/28/2024] Open
Abstract
The development of micro cracks in shale formations can easily lead to wellbore instability caused by liquid phase invasion. In order to effectively seal the shale micropores, the surface treatment of nano-SiO2 particles was developed using the silicane coupling agent A-1891. Then, the temperature-sensitive polypenic acrylamide polymer was modified onto the surface of the nanoprocal particle through reaction to obtain the nanosomal blocking agent ASN. The infrared spectrum shows that there are chemical bonds between the generated polymer chains, rather than simple physical composites, indicating the successful synthesis of the temperature-responsive nanosealing agent ASN. The particle size analysis showed that the synthesized nanoparticles in ASN have a uniform particle size distribution and display no agglomeration phenomenon. Applying ASN as a sealing agent in drilling fluid effectively fills the nanoscale micropores and microcracks in shale, making shale denser and significantly improving the wellbore stability of shale formations. In addition, it has good temperature resistance, can adapt to reservoirs at different temperatures, is non-toxic and environmentally friendly, and has good prospects for stable applications in shale formation wellbore.
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Affiliation(s)
- Daqi Li
- State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 102206, China; (D.L.); (S.G.); (Z.T.); (Y.Z.)
- Sinopec Research Institute of Petroleum Engineering Co., Ltd., Beijing 102206, China
| | - Shuyang Gao
- State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 102206, China; (D.L.); (S.G.); (Z.T.); (Y.Z.)
- Sinopec Research Institute of Petroleum Engineering Co., Ltd., Beijing 102206, China
| | - Zhichuan Tang
- State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 102206, China; (D.L.); (S.G.); (Z.T.); (Y.Z.)
- Sinopec Research Institute of Petroleum Engineering Co., Ltd., Beijing 102206, China
| | - Huimei Wu
- School of Petroleum Engineering, Yangtze University, Wuhan 430100, China
| | - Yayun Zhang
- State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 102206, China; (D.L.); (S.G.); (Z.T.); (Y.Z.)
- Sinopec Research Institute of Petroleum Engineering Co., Ltd., Beijing 102206, China
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Wang C, Sun J, Long Y, Huang H, Song J, Wang R, Qu Y, Yang Z. A Self-Healing Gel with an Organic-Inorganic Network Structure for Mitigating Circulation Loss. Gels 2024; 10:93. [PMID: 38391423 PMCID: PMC10887993 DOI: 10.3390/gels10020093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 02/24/2024] Open
Abstract
Lost circulation control remains a challenge in drilling operations. Self-healing gels, capable of self-healing in fractures and forming entire gel block, exhibit excellent resilience and erosion resistance, thus finding extensive studies in lost circulation control. In this study, layered double hydroxide, Acrylic acid, 2-Acrylamido-2-methylpropane sulfonic acid, and CaCl2 were employed to synthesize organic-inorganic nanocomposite gel with self-healing properties. The chemical properties of nanocomposite gels were characterized using X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscope, X-ray photoelectron spectroscopy and thermogravimetric analysis. layered double hydroxide could be dispersed and exfoliated in the mixed solution of Acrylic acid and 2-Acrylamido-2-methylpropane sulfonic acid, and the swelling behavior, self-healing time, rheological properties, and mechanical performance of the nanocomposite gels were influenced by the addition of layered double hydroxide and Ca2+. Optimized nanocomposite gel AC6L3, at 90 °C, exhibits only a self-healing time of 3.5 h in bentonite mud, with a storage modulus of 4176 Pa, tensile strength of 6.02 kPa, and adhesive strength of 1.94 kPa. In comparison to conventional gel, the nanocomposite gel with self-healing capabilities demonstrated superior pressure-bearing capacity. Based on these characteristics, the nanocomposite gel proposed in this work hold promise as a candidate lost circulation material.
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Affiliation(s)
- Cheng Wang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
- CNPC Engineering Technology R&D Co., Ltd., Beijing 102206, China
| | - Jinsheng Sun
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
- CNPC Engineering Technology R&D Co., Ltd., Beijing 102206, China
| | - Yifu Long
- CNPC Engineering Technology R&D Co., Ltd., Beijing 102206, China
| | - Hongjun Huang
- CNPC Engineering Technology R&D Co., Ltd., Beijing 102206, China
| | - Juye Song
- CNPC Great Wall Drilling Engineering Co., Ltd., Beijing 102206, China
| | - Ren Wang
- CNPC Engineering Technology R&D Co., Ltd., Beijing 102206, China
| | - Yuanzhi Qu
- CNPC Engineering Technology R&D Co., Ltd., Beijing 102206, China
| | - Zexing Yang
- CNPC Engineering Technology R&D Co., Ltd., Beijing 102206, China
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Yan L, Pang S, Dong H, Zheng X, An Y. Magnesium Oxychloride and Magnesium Oxysulfate Cements as Temporary Plugging Agents in Geothermal Drilling. ACS OMEGA 2024; 9:2696-2706. [PMID: 38250366 PMCID: PMC10795049 DOI: 10.1021/acsomega.3c07654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/10/2023] [Accepted: 12/13/2023] [Indexed: 01/23/2024]
Abstract
The development and utilization of geothermal resources are effective ways to alleviate the current haze situation, adjust the energy structure, and achieve energy conservation and emission reduction. Geothermal formations typically contain extensive fracture networks, with fracture openings. These fracture networks can result in substantial losses of the drilling fluid and increased costs for geothermal drilling. Temporary plugging cements are used to solve the problem of lost circulation due to their high strength and high acid solubility. In this paper, two types of temporary plugging materials, magnesium oxysulfate (MOS) cement and magnesium oxychloride (MOC) cement, were prepared. The influence of the plugging agent on the flow field and the force exerted on the solid under the action of the fluid was analyzed using fluid-solid coupling software. The simulation results show that when subjected to a flow rate of 10 m/s, the edge of the cement experiences a significant force, while the stress is not widely transmitted to the middle and rear of the cement. This indicates that the cement has a strong resistance to the fluid flow. The fundamental characteristics of MOC cement and MOS cement, such as compressive strength and setting time, were investigated. The test results show that adjusting the molar ratio of the two types of cements can shorten the setting time by 60% and increase the compressive strength to up to 23 MPa. In addition, the acid solubility of the cement with different ratios of raw materials is above 95%. The plugging performance of these two cements as loss circulation materials was evaluated by using a physical simulation device. The pressure bearing capacity of the MOC cement with different MgO/MgCl2·6H2O/H2O molar ratios ranged between 13.4 and 23.6 MPa. The maximum bearing capacity of the MOS cement can reach up to 18.6 MPa. The results showed that both cements possess excellent plugging and pressure bearing capacity.
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Affiliation(s)
- Liangliang Yan
- School of Engineering and Technology, China University of Geosciences (Beijing), Haidian District, Beijing 100083, China
| | - Shaocong Pang
- School of Engineering and Technology, China University of Geosciences (Beijing), Haidian District, Beijing 100083, China
- Zhengzhou Institute, China University of Geosciences (Beijing), Ximei Building, High-tech Industrial Development Zone, Zhengzhou, Henan 450001, China
| | - Haiyan Dong
- No. 1 Exploration Institute of Geology and Mineral Resources of Shandong Province, Jinan 250109, China
| | - Xiuhua Zheng
- School of Engineering and Technology, China University of Geosciences (Beijing), Haidian District, Beijing 100083, China
| | - Yuxiu An
- School of Engineering and Technology, China University of Geosciences (Beijing), Haidian District, Beijing 100083, China
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Yang S, Liu Z, Pan Y, Guan J, Yang P, Asel M. A Review of Research Progress on the Performance of Intelligent Polymer Gel. Molecules 2023; 28:molecules28104246. [PMID: 37241984 DOI: 10.3390/molecules28104246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 05/13/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023] Open
Abstract
Intelligent polymer gel, as a popular polymer material, has been attracting much attention for its application. An intelligent polymer gel will make corresponding changes to adapt to the environment after receiving stimuli; therefore, an intelligent polymer gel can play its role in many fields. With the research on intelligent polymer gels, there is great potential for applications in the fields of drug engineering, molecular devices, and biomedicine in particular. The strength and responsiveness of the gels can be improved under different configurations in different technologies to meet the needs in these fields. There is no discussion on the application of intelligent polymer gels in these fields; therefore, this paper reviews the research progress of intelligent polymer gel, describes the important research of some intelligent polymer gel, summarizes the research progress and current situation of intelligent polymer gel in the environment of external stimulation, and discusses the performance and future development direction of intelligent polymer gel.
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Affiliation(s)
- Shuangchun Yang
- Department of Petroleum and Natural Gas Engineering College, Liaoning Petrochemical University, No. 1, West Section of Dandong Road, Wanghua District, Fushun 113001, China
| | - Zhenye Liu
- Department of Petroleum and Natural Gas Engineering College, Liaoning Petrochemical University, No. 1, West Section of Dandong Road, Wanghua District, Fushun 113001, China
| | - Yi Pan
- Department of Petroleum and Natural Gas Engineering College, Liaoning Petrochemical University, No. 1, West Section of Dandong Road, Wanghua District, Fushun 113001, China
| | - Jian Guan
- Engineering Department of Greatwall Well Drilling Company, China National Petroleum Corporation, Panjin 124000, China
| | - Peng Yang
- Engineering Department of Greatwall Well Drilling Company, China National Petroleum Corporation, Panjin 124000, China
| | - Muratbekova Asel
- Institute of International Education, Liaoning Petrochemical University, Fushun 113001, China
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