Research on High Density Water-Based Drilling Fluid of Complete Tectonic for the Southern Edge of the Junggar Basin


Junggar basin
southern edge
complete tectonic
PRT-organic salt drilling fluid system

How to Cite

Wang Y, Liu P, Cao G, Zhi Hu, Zhang H. Research on High Density Water-Based Drilling Fluid of Complete Tectonic for the Southern Edge of the Junggar Basin. Int. J. Petrol. Technol. [Internet]. 2017 Apr. 3 [cited 2022 Aug. 19];3(2):58-62. Available from:


The southern edge of the Junggar basin in China has great potential for oil and gas exploitation. However, during drilling in this area, many borehole problems occurred, which leads to low rate of penetration and long drilling cycle. The main reasons from the geological aspect was that this area was affected by tectonic process, which leaded to development of complete tectonic, formation nappe along fault, big dip angles and poor stability. The Formation E2-3a was dominated by mudstone which was sensitive to water and can easily cause shale hydration expansion and dispersal. The instability of the formation is one of the major causes of borehole collapse and tight hole shrinkage. In order to improve the drilling speed and accelerate the process of exploration of southern edge in Juggar basin, the drilling fluids used in this region are studied based on data of geology and drilling data in this paper, Based on the characteristics of the formation E2-3a, a new high density PRT-organic salt drilling fluid is selected by conducting a large number of laboratory tests. Test results of the inhibitory, sealing and stain resistance of this fluid indicates that it could satisfy the drilling requirement in southern edge of the Junggar basin. And field applications also turned out to be positive, the drilling speed was increased by 22% and drilling cycle was reduced by 4 days.


Sun ZM, He ZL and Mou ZH. Structural features and favorable exploration areas in southern margin of Junggar basin, Oil and Gas Geology 2004; 25(2): 216-221.

Zhang W, Mao XJ, Yang H, et al. Innovative application of under balanced drilling technology for deep drilling in wuxia area of junggar basin. IADC/SPE 156258, 2012.

Xue YZ, Li GG, Liu BF and Zhang JH. Application of super high density drilling fluid under ultra-high temperature on well shengke-1, SPE-131189-MS, International Oil and Gas Conference and Exhibition in China, 8-10 June, Beijing, China, 2010.

Jia GY. Drilling in high density and thin pressure windows complex formation, SPE-104411-MS, International Oil and Gas Conference and Exhibition in China, 5-7 December 2006.

Yan LL, Li CJ, Zhang ZL, Wang JH, et al. Successful application of unique high-density water-based drilling fluid used in zhaotong shale gas horizontal wells, SPE-176428- MS, SPE/IATMI Asia Pacific Oil and Gas Conference and Exhibition, 20-22 October, Nusa Dua, Bali, Indonesia, 2015.

Moajil AMA, Nasr-El-Din HA, Kar Y, Bagoury MA, et al. Dispersants for cement and salt contaminated manganese tetraoxide high-density water-based drilling fluids, SPE- 177935-MS, Abu Dhabi International Petroleum Exhibition and Conference, 9-12 November, Abu Dhabi, UAE, 2015.

Bland RG, Mullen GA, Gonzalez YN, Harvey FE, et al. HPHT drilling fluid challenges, SPE-103731-MS, IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, 13-15 November, Bangkok, Thailand, 2006.

Cai LS, Lin YX, Tian L, et al. Research progresses summary of ultra-high density drilling fluid technology [J]. Drilling Fluid and Completion Fluid 2011; 28(5): 70-77.

Fan XS, Zeng L, Zhang Y, et al. Ultra-high density drilling fluid technology uesd in Yuanba [J]. Drilling Fluid and Completion Fluid 2014; 31(2): 31-34.

API Specification 13I. Recommended practice for laboratory testing of drilling fluids. Eigth edition, Washington D C: American Petroleum Institute 2009.

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