Cable-through type thermal recovery wellhead device for electric submersible pump
A wellhead device and traversing technology, which is applied in cable laying equipment, earthwork drilling, wellbore/well components, etc., can solve the problems of many leakage points, inapplicability, and many operating procedures, so as to reduce sealing leakage points, Reliable sealing and connection, reducing the effect of operating procedures
Active Publication Date: 2013-07-31
PETROCHINA CO LTD
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] 1. The sealing of the cable and the connection sealing of the hoisting nipple adopt multiple sealing rings to achieve sealing through the pressure plate, gland and screw (bolt wire). The structure is relatively complicated and there are many leakage points. too applicable;
[0005] 2. The cable crossing design and the structural design of the lifting sub, etc., make the whole set of electric submersible pump oil production wellhead device in workover and other operations, the operation procedures are many and inconvenient;
[0006] 3. The design of the entire wellhead device does not consider the dynamic monitoring of the production of the downhole electric submersible pump, and it is impossible to grasp the dynamics of downhole temperature and pressure in order to optimize the production and operation parameters of the electric submersible pump
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
[0024] Embodiment 1: Taking a cable-through thermal recovery wellhead device for an electric submersible pump as an example, the present invention will be further described in detail. The total height of the electric submersible pump cable through type thermal recovery wellhead is about 2190mm.
[0025] refer to figure 1 . Electric submersible pump cable through type thermal recovery wellhead device, mainly composed of casing flange nipple 1, large cross 2, through flange 3, cable seal through device 4, gate valve 6, tee 7, production gate valve 8 , capillary seal penetrator 9, tubing suspension nipple 11 and casing gate valve 12.
[0026] Casing flange pup joint 1 has a flange at the upper end of the cylindrical pipe, and a 95 / 8BCSG (casing with an outer diameter of 244.5mm) thread at the lower end of the cylindrical pipe. The lower end can be connected to the oil well 95 / 8BCSG (outer 244.5mm diameter casing) casing connection. The upper end of the casing flange nipple 1 ...
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 cable-through type thermal recovery wellhead device for an electric submersible pump, which is applied to thermal recovery of thickened oil of oil fields and adopts the electric submersible pump for oil pumping production. The upper end of a sleeve flange short section is connected with a big four-joint which is connected with a sleeve gate valve; the upper end of the big four-joint is connected with a through flange; an axial hole is arranged on a cylinder of the through flange; the lower end of the axial hole is connected with an oil pipe hanging short section; theupper end of the axial hole is connected with a gate valve, a tee joint and a production gate valve through a flange; the cylinder of the through flange is provided with a cable through hole and a capillary tube through hole; and a capillary tube sealing through device is fixed on the capillary tube through hole. The device has the effects that: a through flange is provided with three channels toperform oil production, provide a power source to an underground electric submersible pump, enable the capillary tube to pass through, measure a pressure by injecting nitrogen into the capillary tubeand enable the thermocouple to pass through for underground temperature measurement.
Description
technical field [0001] The invention relates to a wellhead device for oil production in an oil field, in particular to a wellhead device for thermal recovery wells for heavy oil, which is a wellhead device that uses steam injection and electric submersible pump for oil production. Background technique [0002] Oil fields often use electric submersible pumps for oil production. When using electric submersible pumps for oil production, cables need to be transported from the ground to the underground to provide electric energy for the electric submersible pumps. The cables must pass through the wellhead device. At present, the wellhead device structure of electric submersible pump oil recovery is mainly composed of casing flange nipple, large cross, through cable, cable through sealer, tee, production gate valve, gate valve, tubing suspension nipple, crossing method It is composed of flange, casing gate valve and pipe hanging pup joint. [0003] At present, the electric submer...
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): E21B33/03H02G1/08
Inventor 郭文德窦升军袁新生游红娟陈森
Owner PETROCHINA CO LTD