Method for evaluating plugging effect of drilling fluid for crack expansion type leakage reservoir
The invention discloses a method for evaluating the plugging effect of drilling fluid for a crack expansion type leakage reservoir. The method comprises the following steps: determining the gas logging initial permeability of a core in a research target area by utilizing the Darcy law; placing a to-...
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Main Authors | , , , , |
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Format | Patent |
Language | Chinese English |
Published |
14.03.2023
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Abstract | The invention discloses a method for evaluating the plugging effect of drilling fluid for a crack expansion type leakage reservoir. The method comprises the following steps: determining the gas logging initial permeability of a core in a research target area by utilizing the Darcy law; placing a to-be-evaluated drilling fluid into the roller furnace, performing hot rolling at the formation temperature, pouring the to-be-evaluated drilling fluid into the intermediate container, opening a valve at the outlet end of the core holder, displacing the drilling fluid in a constant-pressure manner, and recording the invasion amount of the drilling fluid at different displacement time; determining the plugging layer forming time and the plugging layer average permeability of the drilling fluid according to the invasion amount of the drilling fluid; evaluating the plugging effect of the drilling fluid through the plugging efficiency coefficient of the drilling fluid; compared with a traditional method, the method provid |
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AbstractList | The invention discloses a method for evaluating the plugging effect of drilling fluid for a crack expansion type leakage reservoir. The method comprises the following steps: determining the gas logging initial permeability of a core in a research target area by utilizing the Darcy law; placing a to-be-evaluated drilling fluid into the roller furnace, performing hot rolling at the formation temperature, pouring the to-be-evaluated drilling fluid into the intermediate container, opening a valve at the outlet end of the core holder, displacing the drilling fluid in a constant-pressure manner, and recording the invasion amount of the drilling fluid at different displacement time; determining the plugging layer forming time and the plugging layer average permeability of the drilling fluid according to the invasion amount of the drilling fluid; evaluating the plugging effect of the drilling fluid through the plugging efficiency coefficient of the drilling fluid; compared with a traditional method, the method provid |
Author | HAO HONGDA LI CHAOWEI YAN XIAOPENG DENG SONG WANG JIANGSHUAI |
Author_xml | – fullname: DENG SONG – fullname: LI CHAOWEI – fullname: YAN XIAOPENG – fullname: HAO HONGDA – fullname: WANG JIANGSHUAI |
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DocumentTitleAlternate | 一种裂缝扩延型漏失储层钻井液堵漏效果评价方法 |
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Snippet | The invention discloses a method for evaluating the plugging effect of drilling fluid for a crack expansion type leakage reservoir. The method comprises the... |
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SubjectTerms | EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS TESTING |
Title | Method for evaluating plugging effect of drilling fluid for crack expansion type leakage reservoir |
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