System and technology for intelligent throttling in natural gas well
A process method and technology for natural gas, applied in the fields of fluid production, earthwork drilling, wellbore/well components, etc., can solve problems such as affecting the production progress, increasing the operation risk, and unable to adjust the size of the choke orifice in real time, etc. To achieve the effect of optimal production
Inactive Publication Date: 2015-02-11
PETROCHINA CO LTD
View PDF5 Cites 18 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Purely mechanical chokes have two main disadvantages in gas well production: first, traditional chokes cannot obtain relevant production data such as downhole pressure and temperature in real time, and it is difficult to know in time the liquid carrying effect of the choke, In this way, the downhole production and safety status cannot be directly reflected in time, and the next step measures cannot be formulated in time, which will have a serious impact on the stability of the gas well
The second is that the traditional downhole choke cannot adjust the diameter of the choke mouth in real time, and the throttle function of different levels must be realized by shutting down the well and replacing the oil nozzles of different sizes by rope operation, so that the production of the gas well cannot be adjusted in time. Affect production schedule and increase operation risk
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 1
[0017] Embodiment 1: as figure 1 , Figure 2(a), Figure 2(b), Figure 2(c),
[0018] An intelligent downhole throttle system for natural gas. Therefore, there is an urgent need for an easy-to-adjust downhole throttle system that can adjust the mouth diameter of the throttle in real time without shutting down the well to meet the needs of production adjustment. Reach the level of improving downhole throttling technology.
[0019] figure 1 It shows the structural block diagram of an exemplary embodiment of the natural gas downhole intelligent throttling system according to the present invention; Fig. 2(a) shows the downhole mechanism of an exemplary embodiment of the natural gas downhole intelligent throttling system according to the present invention Fig. 2(b) shows the assembly diagram of the throttle valve seat and valve core of the adjustable flow mechanism of the downhole mechanism in Fig. 2(a); Fig. 2(c) shows the natural gas according to the present invention Schematic d...
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 discloses a system and a technology for intelligent throttling in a natural gas well, and belongs to the technical field of natural gas exploitation. The system comprises an aground mechanism, a downhole mechanism and a connecting component. The aground mechanism and the downhole mechanism are connected with each other through the connecting component to communicate with each other. The aground mechanism comprises an industrial personal computer, a temperature and pressure interrogator, a motion control card, a power source and a control software unit of the industrial personal computer. The downhole mechanism comprises an intelligent throttling device and a sensor capable of monitoring temperatures and pressure before and after throttling. The intelligent throttling device comprises a motor, a speed reducer, a coupler, a transmission switching mechanism, a valve rod, a throttling valve seat and a valve core. The throttling valve seat is connected with an oil pipe through a threaded fastener, and the oil pipe is formed integrally. The system and the technology have the advantages that the flow area between a downhole flow nipple and the throttling valve seat is adjusted by an aground control system according to actual downhole environments, long-distance automatic or semi-automatic throttling and depressurizing can be realized, and accordingly, optimum gas well production is achieved.
Description
technical field [0001] The invention relates to a natural gas downhole intelligent throttling system and a process method, belonging to the technical field of natural gas exploitation. Background technique [0002] In recent years, the mature application of natural gas downhole choke technology has promoted the development of downhole chokes. How to develop an intelligent downhole throttling system for natural gas that can adjust downhole throttling parameters in real time to achieve throttling, pressure reduction and stable production according to the changing environmental conditions such as downhole pressure and temperature has become more and more important. [0003] In foreign countries, the research on the downhole throttling system has been relatively mature, and most of them tend to be automated. The main design idea of the foreign intelligent downhole flow control system is to analyze various downhole data according to the oil well optimal production system, and ...
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 IPC IPC(8): E21B43/12
CPCE21B43/12
Inventor马发明何明格林丽君杨云山
OwnerPETROCHINA CO LTD