Unlock instant, AI-driven research and patent intelligence for your innovation.
Method for measuring reserves of tight gas reservoir based on gas reservoir drilling rate
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A measurement method and drilling technology, which can be used in earth-moving drilling, wellbore/well components, etc., and can solve the problems of unclear gas reservoir boundaries, large uncertainty in reserves measurement, and large gas layer changes.
Active Publication Date: 2019-02-19
冀光
View PDF8 Cites 2 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Affected by multiple factors such as gas reservoir type, gas layer distribution, number of wells drilled and parameter measurement, etc., the uncertainty of reserve measurement is relatively large, especially for tight gas reservoirs, where the boundaries of gas reservoirs are not clear and gas layers vary greatly, so a new method is urgently needed. A method to improve the reliability of reserves determination
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0032] See attached Figure 1-5 , preferably, a method for determining the reserves of tight gas reservoirs based on the gas layer drilling rate is provided, which is characterized in that it includes the following steps:
[0033] Determine the coverage area of the work area, and measure the reserve abundance of all wells in the work area;
[0034] According to the distribution characteristics of the reserve abundance value of a single well, multiple reserve abundance intervals are divided, and the number of drilling wells in different abundance intervals is counted;
[0035] Measure the drilling rate of gas wells in different abundance intervals, and multiply it with the total area of the block to obtain the gas-bearing area of each abundance interval;
[0036] According to the product of the average reserve abundance of gas wells in each abundance interval and the gas-bearing area, the reserves are obtained, and the total reserves of the work area are obtained by cumu...
Embodiment 2
[0053] see Figure 1-5 , preferably, taking a tight gas reservoir development block as an example ( figure 1 ) for reserve determination. According to geological data, this block has the distribution characteristics of multi-layered, superimposed and continuous gas layers in the vertical direction ( figure 2 ), the superimposed gas-bearing area is 492.8km 2 , the proven geological reserves submitted during the exploration stage were 787.85×10 8 m 3 , the average reserve abundance of the block is 1.610 8 m 3 / km 2 . Since it was put into development, 260 wells have been drilled, and the well pattern density is 0.53 wells / km 2 .
[0054] Preferably, the present invention provides a method for determining the reserves of tight gas reservoirs based on the rate of encountering gas layers, which is characterized by comprising the following steps:
[0055] In step (1), the reserve abundance of a single well in the work area is determined, and its connotation is that the ga...
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 relates to a method for measuring the reserves of a tight gas reservoir based on gas reservoir drilling rate. The method comprises the following steps that the coverage area of a work area is determined, and the single well reserve abundance of all wells in the work area is measured; according to the distribution characteristics of single well reserve abundance value, multiple reserve abundance intervals are divided, and the number of wells in different abundance intervals is counted; the drilling rate of gas wells in different abundance intervals is measured, and multiplies withthe total area of blocks to obtain the gas-bearing area of each abundance interval; and reserves are obtained according to the average reserve abundance and the gas-bearing area of the gas wells in each abundance interval, and the total reserves in the work area are obtained by cumulative summation. The method is an accurate method for measuring reserves, and thus a basis is provided for efficient development of gas fields.
Description
technical field [0001] The invention relates to a method for determining reserves of unconventional natural gas development. Aiming at large-area gas-bearing tight gas reservoirs, after being put into development and under certain well pattern conditions, the distribution area of different reserve abundance regions is determined by the coefficient of drilling encounter rate. Combining the reserve abundance of a single well point and the plane zoning, the reserves of tight gas reservoirs distributed in a large area are measured. More specifically, it involves a method for measuring the reserves of tight gas reservoirs based on the drilling rate of gas layers. Background technique [0002] The determination of reserves is a basic work of gas reservoir development. The volumetric method is the basic method of gas reservoir reserves determination and has been widely used. However, for different types of gas reservoirs, the determination of key parameters in the formula is quite...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More