Method for achieving judgment of emulsified position in long rock core
A technology of long cores and cores, which is applied in the field of realizing the judgment of the emulsification position in the long core, and can solve the problem of being unable to judge the specific position of the emulsification of oil and functional polymer solution, and achieve a good guiding effect
Active Publication Date: 2018-12-21
东营市大学科技园发展有限责任公司
View PDF5 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, the visible photolithography glass model is mainly used to study the formation and distribution of emulsion in the core in the laboratory. Under the condition that the artificial core is invisible, the existing experimental methods have the following defects: it is impossible to judge the oil in the core. The specific position where the functional polymer solution is emulsified
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] The present invention will be further described below in conjunction with accompanying drawing:
[0020] This kind of method to realize the judgment of emulsification position in long core is unique in that: using the method of series connection of short cores, the continuous phase is extracted at the series position, and the state of the continuous phase is observed to judge the emulsification position in the long core. According to the preliminary basis of whether the discontinuous phase in the core is emulsified, and then according to the pressure difference between the emulsion and the oil / water phase mixture in the core, the specific position where the oil and the functional polymer solution in the long core are emulsified is judged.
[0021] The described method for judging the position of emulsification in the long rock core is specifically composed of the following steps:
[0022] Step 1 of the invention, selecting an actual simulation block and determining rele...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A method for achieving the judgment of a emulsified position in a long rock core comprises the following primary steps: a continuous phase is extracted in a series position by using a short rock coreseries method, and the state of the continuous phase is observed and is used as a preliminary basis for judging whether the discontinuous phase in the same position in the long rock core is emulsifiedor not, then, according to the difference of the pressures of the emulsion and oil / water phase mixed liquid in the rock core, the specific position of emulsification of the oil and functional polymersolution in the rock core is judged. The method is used in an indoor simulation experiment, the position of emulsification in the rock core can be accurately determined, so that the distribution andchange of the emulsion in the reservoir can be more clearly recognized, and the method has better guiding significance on actual mineral field experiments.
Description
Technical field: [0001] The invention belongs to the technical field of oil and gas field development and enhanced recovery, and in particular relates to a method for judging the position of emulsification in a long rock core. Background technique: [0002] At present, most oil fields in my country have entered the high water cut period, and functional polymer flooding has become one of the effective technologies for enhancing oil recovery in the late stage of high water cut. The oil displacement mechanism of functional polymers is emulsification and viscosification. During the core displacement process, the shearing action of the reservoir core throat is used to generate emulsion. In the actual reservoir pores, due to the influence of the connectivity of small pores and the size of pore throats, the oil and water phases are dispersed and discontinuous, and more contact points or narrow contact surfaces are in contact; while the oil and water phases in conventional static te...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/22
CPCE21B43/16
Inventor 皮彦夫刘丽戴志鹏孙丽艳郭轩刘金鑫
Owner 东营市大学科技园发展有限责任公司