Accompanying injection wellhead and wellhead accompanying injection method
A technology of steam injection and sealing, which is used in wellbore/well components, earth-moving drilling, and fluid production, etc., and can solve problems such as leakage of steam from pipelines
Pending Publication Date: 2019-03-05
CHINA PETROLEUM & CHEM CORP +1
View PDF17 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Most of the existing oil production wellheads with steam injection technology use the hollow polished rod sealing technology, and the hollow sucker rod technology is used in the downhole; the ground steam injection technology is added during implementation, that is, the steam injected first passes through the ground steam injection pipeline, and then passes through the hollow polished rod and hollow sucker rod. The sucker rod realizes oil production with injection; the steam injection pipeline connected with the hollow polished rod needs to be erected and fixed at a certain height, and it moves up and down with the hollow polished rod during work, which will cause a safety hazard of steam leakage from the worn pipeline
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 detailed description and technical content of the present invention are described below with the drawings, but the drawings are only for reference and description, and are not used to limit the present invention.
[0020] as attached Figure 1 to Figure 2 As shown, a wellhead with injection includes a steam injection spool, a hollow sucker rod 12, and a solid polished rod 4. The steam injection spool is installed on the wellhead, and also includes a steam injection sealing pump barrel 10, a steam injection sealing pump plunger 11. The steam injection sealed pump plunger is installed in the steam injection sealed pump barrel, wherein the upper end of the steam injection sealed pump plunger 11 is connected to the solid polished rod 4, and the lower end of the steam injection sealed pump plunger is connected to the hollow sucker rod 12. The plunger of the steam injection sealed pump has a radial steam injection screen hole 7, the upper end of the steam injection sealed...
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 an accompanying injection wellhead and a wellhead accompanying injection method. The accompanying injection wellhead comprises a steam injection four-way unit, a hollow oil pumping rod and a solid polished rod, and the steam injection four-way unit is installed on the wellhead body; the wellhead further comprises a steam injection sealing pump cylinder and a steam injectionsealing pump plunger, and the steam injection sealing pump plunger is installed in the steam injection sealing pump cylinder; the upper end of the steam injection sealing pump plunger is connected with the solid polished rod, the lower end of the steam injection sealing pump plunger is connected with the hollow oil pumping rod, the steam injection sealing pump plunger is provided with radial steam injection screen holes, the upper end of the steam injection sealing pump cylinder is connected with the steam injection four-way unit, the lower end of the steam injection sealing pump cylinder isinserted into an oil pipe, and the oil pipe is located in a sleeve. The accompanying injection wellhead and the wellhead accompanying injection method are applied to wellhead steam injection of heavyoil wells and high-condensation oil wells, the steam injection to shafts is achieved, and the temperature of produced fluid of the shafts is increased.
Description
technical field [0001] The invention relates to oil exploitation technology, in particular to an accompanying injection wellhead and a wellhead accompanying injection method. Background technique [0002] Shengli Oilfield is rich in heavy oil reserves. Due to the high viscosity of crude oil, it is difficult to extract, and most of them are produced by multiple rounds of steam stimulation. Most of the existing oil production wellheads with steam injection technology use the hollow polished rod sealing technology, and the hollow sucker rod technology is used in the downhole; the ground steam injection technology is added during implementation, that is, the steam injected first passes through the ground steam injection pipeline, and then passes through the hollow polished rod and hollow sucker rod. The sucker rod realizes oil production with injection; the steam injection pipeline connected to the hollow polished rod needs to be erected and fixed at a certain height, and it mov...
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): E21B43/24
CPCE21B43/24
Inventor 肖萍朱泽军杜玮暄高综启刘丙生孙衍东姜东侯红周娜张方圆
Owner CHINA PETROLEUM & CHEM CORP