Method and system for determining oil-water contact in fractured-vuggy reservoir
An oil-water interface, fracture-cavity technology, applied in the field of oilfield exploration, can solve the problems of large burial depth, short stable production period, and high cost of liquid production profile testing.
Active Publication Date: 2020-10-23
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Since the progressive development of the reservoir, oil wells have experienced early water breakthrough, short stable production period, rapid decline in production, and low recovery
Due to the depth of the oil reservoir and the unclear understanding of the oil-water relationship, it is extremely difficult to control the water output of the oil well
The existing oil-water interface analysis methods in fractured-vuggy reservoirs mainly include liquid production profile test method and dynamic and static comprehensive analysis method.
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
[0051] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.
[0052] like figure 1 Shown is a flow chart of a method for determining the oil-water contact in a fractured-cavity reservoir according to an embodiment of the present invention, the following reference figure 1 The present invention will be described in detail.
[0053] First, in step S110, the original oil-water contact depth of the fractured-vuggy reservoir unit is determined by using the basic data of th...
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
The invention provides a determining method and system for an oil-water interface of a fracture-cave type oil reservoir. The oil-water interface determining method comprises the steps that the depth of an original oil-water interface of a fracture-cave type oil reservoir unit is determined through oil well basic data; the oil-water interface propulsion height of an oil well under the gravitational differentiation effect is calculated through oil well pressure test data, fluid high-pressure physical property parameters and seismic forward simulation information; and the dynamic oil-water interface of the unfilled karst cave type oil well is determined according to the depth and the propulsion height of the original oil-water interface. The oil well test cost can be reduced, oil stabilizing and water controlling of the oil well are effectively guided, and the oil reservoir development effect is improved comprehensively.
Description
technical field [0001] The invention relates to the technical field of oil field exploration, in particular to a method and system for determining the oil-water interface of a fracture-cavity reservoir. Background technique [0002] Fracture-vuggy bodies are discretely distributed, and the contact relationships between fractures and caves are diverse and have large scale differences. Fracture-vuggy reservoirs are deeply buried, and the oil-water relationship is complex. Controlled by different fracture-vug systems, there is sealed water locally, and active strong bottom water develops at the bottom. [0003] Since the progressive development of the reservoir, the oil wells have experienced early water breakthrough, short stable production period, rapid decline in production, and low recovery. Due to the deep burial of oil reservoirs and unclear understanding of the relationship between oil and water, it is extremely difficult to control water production from oil wells. The...
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 Patents(China)
IPC IPC(8): E21B47/047
CPCE21B47/047
Inventor 程倩刘中春吕心瑞郑松青朱桂良张慧
Owner CHINA PETROLEUM & CHEM CORP