Solid-Free and Strongly Inhibitive Water-Based Drilling Fluid in the Liaohe Oilfield

WU Shuang

doi:10.11911/syztjs.201706008

Volume 45 Issue 6

Nov. 2017

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Petroleum Drilling Techniques > 2017 > 45(6): 42-48. > DOI: 10.11911/syztjs.201706008

WU Shuang. Solid-Free and Strongly Inhibitive Water-Based Drilling Fluid in the Liaohe Oilfield[J]. Petroleum Drilling Techniques, 2017, 45(6): 42-48. DOI: 10.11911/syztjs.201706008

Citation:

WU Shuang. Solid-Free and Strongly Inhibitive Water-Based Drilling Fluid in the Liaohe Oilfield[J]. Petroleum Drilling Techniques, 2017, 45(6): 42-48. DOI: 10.11911/syztjs.201706008

Citation:

WU Shuang. Solid-Free and Strongly Inhibitive Water-Based Drilling Fluid in the Liaohe Oilfield[J]. Petroleum Drilling Techniques, 2017, 45(6): 42-48. DOI: 10.11911/syztjs.201706008

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Solid-Free and Strongly Inhibitive Water-Based Drilling Fluid in the Liaohe Oilfield

WU Shuang

Lengjia Oilfield Development Company, PetroChina Liaohe Oilfield Company, Panjin, Liaoning, 124010, China

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Received Date: May 17, 2017
Revised Date: October 24, 2017

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Abstract

Abstract

Solid-free strongly inhibitive water-based drilling fluid has been developed by optimizing the key processing agents that take in brine in a dispersion phase.This innovative drilling fluid can effectively eliminate problems,and can protect low-permeability reservoirs and reduce the high frequency of drilling troubles in the Liaohe Oilfield.An indoor performance evaluation showed that newly-developed drilling fluid can provide outstanding inhibition performances,with a rolling cutting recovery rate of 98.7%,and which contains drilling cuttings up to 25% and temperature resistant up to 180℃.There are mild damages to the reservoir.The core permeability recovery rates are over 90%,which can effectively plug fractures of 0.1 to 0.3 mm,with high pressure bearing capacity and anti-flowback ability.The drilling fluid was used in the third phase drilling in the Well Tuo-62 in the Liaohe Oilfield,and achieved a regular borehole size without any down-hole trouble.Compared with offset wells,the well has high ROP and oil production,and possesses low skin factors.Research results indicated that the solid-free strongly inhibitive water-based drilling fluid can effectively meet the demands of drilling operations for low-permeability formations in the Liaohe Oilfield,which can be popularized and applied widely in the future.

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Solid-Free and Strongly Inhibitive Water-Based Drilling Fluid in the Liaohe Oilfield

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