Petroleum Exploration and Development >
A method for preventing hydrates from blocking flow during deep-water gas well testing
Received date: 2020-04-24
Revised date: 2020-10-09
Online published: 2020-12-29
Supported by
National Natural Science Foundation of China(51991363);National Natural Science Foundation of China(51974350);Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)(GML2019ZD0501);Changjiang Scholars Program(Q2016135)
Based on the research of the formation mechanism and evolution rule of hydrate flow obstacle during deep-water gas well testing, a new method for the prevention of hydrate flow obstacle based on safety testing window is proposed by changing the previous idea of "preventing formation" to the idea of "allowing formation, preventing plugging". The results show that the effective inner diameter of the testing tubing and the wellhead pressure decrease gradually with the formation and precipitation of hydrates during deep-water gas well testing, and it presents three typical processes of slow, fast and sudden changes. There is a safety testing window during deep-water gas well testing. The safety testing window of deep-water gas well testing decreases first and then increases with the increase of gas production rate, and increases with the increase of hydrate inhibitor concentrations. In the case with different testing production rates, a reasonable testing order with alternate low and high gas production rates has been proposed to further reduce the dosage of hydrate inhibitor and even avoid the use of hydrate inhibitors considering the decomposition and fall-off of hydrates. Compared with the traditional methods, the new method based on safety testing window can reduce the dosage of hydrate inhibitor by more than 50%.
Jianbo ZHANG , Zhiyuan WANG , Shujie LIU , Wenbo MENG , Baojiang SUN , Jinsheng SUN , Jintang WANG . A method for preventing hydrates from blocking flow during deep-water gas well testing[J]. Petroleum Exploration and Development, 2020 , 47(6) : 1354 -1362 . DOI: 10.1016/S1876-3804(20)60143-X
| [1] | ZHANG Liang, ZHANG Chong, HUANG Haidong, et al. Gas hydrate risks and prevention for deep water drilling and completion: A case study of well QDN-X in Qiongdongnan Basin, South China Sea. Petroleum Exploration and Development, 2014,41(6):755-762. |
| [2] | ZHANG Gongcheng, ZENG Qingbo, SU Long, et al. Accumulation mechanism of LS 17-2 deep water gas field in Qiongdongnan Basin. Acta Petrolei Sinica, 2016,37(S1):34-46. |
| [3] | ZHANG Chong, REN Guanlong, DONG Zhao, et al. Establishment and application of a wellbore temperature field prediction model for deep water gas well testing. China Offshore Oil and Gas, 2016,28(5):78-84. |
| [4] | ZOU Caineng, YANG Zhi, HE Dongbo, et al. Theory, technology and prospects of conventional and unconventional natural gas. Petroleum Exploration and Development, 2018,45(4):575-587. |
| [5] | GAO Yonghai, LIU Kai, ZHAO Xinxin, et al. Prediction of wax precipitation region in wellbore during deep water oil well testing. Petroleum Exploration and Development, 2018,45(2):333-338. |
| [6] | WANG Zhiyuan, SUN Baojiang, CHENG Haiqing, et al. Prediction of gas hydrate formation region in the wellbore of deepwater drilling. Petroleum Exploration and Development, 2008,35(6):731-735. |
| [7] | LI Zhong, YANG Jin, WANG Erjun, et al. A study of prevention and control of hydrates During well testing in wells with high temperature and high pressure. Well Testing, 2011,20(1):35-37. |
| [8] | SUN Changyu, CHEN Guangjin, GUO Tianmin. The status of the kinetics of hydrate nucleation. Acta Petrolei Sinica, 2001,22(4):82-86. |
| [9] | SLOAN E D, KOH C A, SUM A K. Natural gas hydrates in flow assurance. Oxford: Gulf Professional Publishing, 2011. |
| [10] | FU Weiqi, WANG Zhiyuan, ZHANG Jianbo, et al. Investigation of rheological properties of methane hydrate slurry with carboxmethylcellulose. Journal of Petroleum Science and Engineering, 2020,184:106504. |
| [11] | WANG Zhiyuan, ZHAO Yang, SUN Baojiang, et al. Modeling of hydrate blockage in gas-dominated systems. Energy Fuels, 2016,30:4653-4666. |
| [12] | LIU Wenyuan, HU Jinqiu, LI Xiangfang, et al. Research on evaluation method of wellbore hydrate blocking degree during deepwater gas well testing. Journal of Natural Gas Science and Engineering, 2018,59:168-182. |
| [13] | ZHANG Jianbo, WANG Zhiyuan, LIU Shun, et al. Prediction of hydrate deposition in pipelines to improve gas transportation efficiency and safety. Applied Energy, 2019,253:113521. |
| [14] | JASSIM E, ABDI M A, MUZYCHKA Y, et al. A new approach to investigate hydrate deposition in gas-dominated flowlines. Journal of Natural Gas Science and Engineering, 2010,2:163-177. |
| [15] | LI Xiangfang, LIU Wenyuan, LIU Shujie, et al. A prevention and control method for natural gas hydrate in pipe strings during deepwater gas well production tests. Natural Gas Industry, 2019,39(7):63-72. |
| [16] | REYNA E, STEWART S. Case history of the removal of a hydrate plug formed during deep water well testing. SPE 67746-MS, 2001. |
| [17] | FREITAS A, GASPARI E, CARVALHO P, et al. Formation and removal of a hydrate plug formed in the annulus between coiled tubing and drill string. SPE 17229-MS, 2005. |
| [18] | DE ASSIS J V, MOHALLEM R, TRUMMER S A, et al. Hydrate remediation during well testing operations in the deepwater Campos Basin, Brazil. SPE 163881-MS, 2013. |
| [19] | ARRIETA V V, TORRALBA A O, HERNANDEZ P C, et al. Case history: Lessons learned from retrieval of coiled tubing stuck by massive hydrate plug when well testing in an ultradeepwater gas well in Mexico. SPE Production & Operations, 2011,26(4):337-342. |
| [20] | YU T, GUANG G, ABUDULA A. Production performance and numerical investigation of the 2017 offshore methane hydrate production test in the Nankai Trough of Japan. Applied Energy, 2019,251:113338. |
| [21] | CREEK J L. Efficient hydrate plug prevention. Energy Fuels, 2012,26(7):4112-4116. |
| [22] | ZHAO Xin, QIU Zhengsong, HUANG Weian, et al. Inhibition mechanism and optimized design of thermodynamic gas hydrate inhibitors. Acta Petrolei Sinica, 2015,36(6):124-130. |
| [23] | ZHAO X, QIU Z, ZHANG Z, et al. Relationship between the gas hydrate suppression temperature and water activity in the presence of thermodynamic hydrate inhibitor. Fuel, 2020,264:116776. |
| [24] | XU Jiafang, QIU Zhengsong, HE Chang. The inhibitor optimization of gas hydrates in deepwater drilling fluids. Acta Petrolei Sinica, 2011,32(1):149-152. |
| [25] | HUO Hongjun, REN Shaoran, WANG Ruihe, et al. Experiment on synergetic effects of kinetic and thermodynamic hydrate inhibitors. Journal of China University of Petroleum (Edition of Natural Science), 2012,36(5):116-119. |
| [26] | SUN Huicui, WANG Ren, WANG Jianhua, et al. Effects of polyvinylpyrrolidone with different molecular weights on the formation and growth of tetrahydrofuran hydrate. Natural Gas Industry, 2018,38(5):125-132. |
| [27] | XU Yongjun, YANG Xiaoxi, DING Jing, et al. Study on anti- agglomerates of gas hydrate. Natural Gas Industry, 2004,24(12):135-138. |
| [28] | LINGELEM M N, MAJEED A I, STANGE E. Industrial experience in evaluation of hydrate formation, inhibition, and dissociation in pipeline design and operation. Annals of the New York Academy of Sciences, 1994,715(1):75-93. |
| [29] | DI LORENZO M, AMAN Z M, KOZIELSKI K, et al. Underinhibited hydrate formation and transport investigated using a single-pass gas-dominant flowloop. Energy Fuels, 2014,28:7274-7284. |
| [30] | DING Lin, SHI Bohui, LYU Xiaofang, et al. Investigation of natural gas hydrate slurry flow properties and flow patterns using a high pressure flow loop. Chemical Engineering Science, 2016,146:199-206. |
| [31] | SONG Guangchun, LI Yuxing, WANG Wuchang, et al. Investigation of hydrate plugging in natural gas+diesel oil+water systems using a high-pressure flow loop. Chemical Engineering Science, 2017,158:480-489. |
| [32] | LIU Wenyuan, HU Jinqiu, LI Xiangfang, et al. Study on the formation and prevention of hydrate in the backflow stage of deep water gas well test. China Offshore Oil and Gas, 2019,31(2):136-147. |
| [33] | WANG Zhiyuan, ZHANG Jianbo, SUN Baojiang, et al. A new hydrate deposition prediction model for gas-dominated systems with free water. Chemical Engineering Science, 2017,163:145-154. |
| [34] | WANG Zhiyuan, ZHAO Yang, ZHANG Jianbo, et al. Quantitatively assessing hydrate-blockage development during deep- water-gas-well testing. SPE Journal, 2018,23(4):1166-1183. |
| [35] | WANG Zhiyuan, YU Jing, ZHANG Jianbo, et al. Improved thermal model considering hydrate formation and deposition in gas-dominated systems with free water. Fuel, 2019,236:870-879. |
| [36] | SONG Shangfei, SHI Bohui, YU Weichao, et al. Study on the optimization of hydrate management strategies in deepwater gas well testing operations. Journal of Energy Resources Technology, 2020,142(3):033002. |
| [37] | WANG Zhiyuan, SUN Xiaohui, WANG Xuerui, et al. Prediction of natural gas hydrate formation region in wellbore during deep water gas well testing. Journal of Hydrodynamics, 2014,26(4):568-576. |
| [38] | ZHANG Jianbo, WANG Zhiyuan, SUN Baojiang, et al. An integrated prediction model of hydrate blockage formation in deep-water gas wells. International Journal of Heat and Mass Transfer, 2019,140:187-202. |
| [39] | ZHANG Zhennan, SUN Baojiang, WANG Zhiyuan, et al. The foamability analysis of foam drainage in liquid-producing gas wells. Acta Petrolei Sinica, 2019,40(1):112-118. |
| [40] | ZHANG Jianbo, WANG Zhiyuan, DUAN Wenguang, et al. Real-time estimation and management of hydrate plugging risk during deepwater gas well testing. SPE 197151-MS, 2020. |
| [41] | GOEL N, WIGGINS M, SHAH S. Analytical modeling of gas recovery from in situ hydrates dissociation. Journal of Petroleum Science and Engineering, 2001,29(2):115-127. |
| [42] | DI LORENZO M, AMAN Z M, KOZIELSKI K, et al. Modelling hydrate deposition and sloughing in gas-dominant pipelines. The Journal of Chemical Thermodynamics, 2018,117:81-90. |
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