CN201581881U

CN201581881U - Injection-production integral tubular column of thickened oil pressure-exempting well

Info

Publication number: CN201581881U
Application number: CN2010200102642U
Authority: CN
Inventors: 林军; 张勇; 刘忠祥; 张春雷; 邹军; 夏红军; 陈永恒; 郭欣竹; 刘恒
Original assignee: 郭欣竹
Priority date: 2010-01-18
Filing date: 2010-01-18
Publication date: 2010-09-15
Anticipated expiration: 2020-01-18

Abstract

The utility model discloses an injection-production integral tubular column of a thickened oil pressure-exempting well. The injection-production integral tubular column comprises a tail pipe, an apertured plug and the like and is characterized in that an injection-production conversion device is connected between the tail pipe and the apertured plug and comprises an outer pipe, a sliding plug and the like; the sliding plug comprises a central pipe, an upper ring body and a lower ring body; the upper ring body is provided with a longitudinal blowout prevention passage; the cavity of the central pipe is internally provided with multi-hole upper and lower location-limited plates; the pipe wall of the central pipe between the two location-limited plates are provided with a radial direction blowout-prevention hole; the cavity of the central pipe is internally provided with a valve body; the lower end of the air inlet of the valve body is provided with a valve core; a lower thrust spring and an upper thrust spring are arranged between the valve core and the lower location-limited body as well as the upper end of the valve body and the upper location-limited plate; and therefrom, a formed sliding plug component is fixed in the cavity of the upper part of the outer pipe in a scission way by the upper ring body and the lower ring body of the sliding plug and causes the lower ring body to form the plugging on an oil inlet passage arranged on the pipe wall of the outer pipe. The tubular column can prevent the phenomenon that the oil well produces the repeated overflow in the process of lowering the pump at the last phase of the blowout prevention, and further increases the oil production efficiency.

Description

A kind of viscous crude is exempted from the kill-job notes and is adopted the one tubing string

Technical field

The utility model relates to a kind of heavy oil wells to be annotated and adopts the one tubing string, exactly is that a kind of viscous crude is exempted from kill-job and annotated and adopt the one tubing string.

Technical background

In the field, oil field, the main method of heavy crude heat extraction is the steam soak method, and this method mainly comprises annotates vapour, vexed well and open flow three process; The more advanced tubing string of the technology of using in the heavy crude heat extraction is " notes are adopted the one tubing string ", promptly annotates vapour, the shared tubing string of oil recovery.This tubing string mainly is made up of heat insulation one pipe, pump seat, tail pipe and porose plug.Existing " notes are adopted the one tubing string " in the subject matter that exists in the heavy crude heat extraction process is: for the well of part Xin Jing, new perforations adding or stratum energy abundance, often run into overflow phenomena repeatedly under latter stage in the pump process at open flow, according to relevant oil recovery security regulations, as long as being arranged, overflow just can not descend pump to recover the oil, therefore the existence of overflow phenomena has greatly reduced the progress of oil extraction operation, in order to prevent overflow, the way that present people generally adopt is the hot water well killing method, but the application of this method can damage the stratum again unavoidably.

Summary of the invention

The purpose of this utility model is can exempt from kill-job at open flow effectively avoid overflow phenomena to take place in the pump process under latter stage viscous crude and annotate and adopt the one tubing string for people provide a kind of.

The purpose of this utility model is achieved in that it comprises tail pipe, porose plug etc., is characterized in being connected to annotate between tail pipe and porose plug adopting conversion equipment, and this device is made up of outer tube, sliding plug etc.; Sliding plug by central tube and be positioned on its vertical two ends cylindrical on, lower ring body constitutes, be shaped on vertical open flow passage on the upper ring body, fixedly install in the central lumen porous on, lower limiting board, make radially open flow hole on the central tube tube wall between the two, slide in this central lumen valve body is set, the air inlet lower end of valve body is provided with spool, and between spool and lower limiting board, be provided with down respectively between valve body upper end and the upper limit plate, last thrust spring, the sliding plug assembly of Xing Chenging is by on the sliding plug thus, lower ring body can be fixed in the outer lumen with cutting off, and makes described lower ring body form shutoff to the oil inlet passage that is arranged on the outer tube wall just.

After the utility model is realized, for the well of Xin Jing, new perforations adding or stratum energy abundance, because being provided with to annotate, it adopts conversion equipment, so that behind vexed well in the open flow process, annotate when adopting conversion equipment top head of liquid, its valve body is moved on automatically when strata pressure is higher than, the open flow hole that is arranged on the central tube is opened, and then realize the oil well open flow, thus the generation of overflow phenomena prevented repeatedly, and then improve oil extraction operation efficient.

Description of drawings

Fig. 1 is that the utility model notes are adopted the conversion device structure schematic diagram

Fig. 2 is an assembling mode schematic diagram of the present utility model

The specific embodiment

By Fig. 1, Fig. 2 as seen, the utility model comprises the heat insulation one pipe 16 that is arranged at 22 tops, shaft bottom in the prior art, insert pump pump seat 17, insert pump 18, tail pipe 19 and porose plug 21, be characterized between tail pipe and porose plug, being connected to annotate adopting conversion equipment 20, this device is by outer tube 1, compositions such as sliding plug, sliding plug by central tube 4 and be positioned on its vertical two ends cylindrical on,

lower ring body

2,10 constitute, upper ring body has vertical open flow passage 12, fixedly install porous in the central lumen, promptly have some vertical notes vapour through holes 13 on, lower limiting board 5,9, make radially open flow hole 14 on the central tube tube wall between the two, this one promptly goes up, slide in the central lumen between the lower limiting board cap shape is set, the cap mouth is positioned at the valve body 7 of below, the air inlet lower end of valve body is provided with sphere-like spool 15, and between spool and lower limiting board, be provided with down respectively between valve body upper end and the upper limit plate, last thrust spring 8,6; Thus the upper and lower ring body of the sliding plug assembly of Xing Chenging by sliding plug be connected pin 3 and can be fixed in the outer tube upper chambers with cutting off, and make described lower ring body 10 form shutoff to the oil inlet passage 11 that is arranged on the outer tube wall just, during assembling, outer tube of the present utility model upper end is connected with the tail pipe lower end, for example, be threaded.

Should illustrate that the specific constructive form of the present utility model that provides in the present embodiment is not unique.For example: 1, the specific constructive form of the one way valve of being made up of valve body, spool, spring is multiple in addition, and this is understood that for those of ordinary skills, so do not repeat them here; 2, in the present embodiment, sliding plug has adopted split form of structure, promptly formed by central tube and upper and lower ring body welding processing respectively, yet in actual production, it also can adopt the monolithic construction form.

Operating principle of the present utility model is: when annotating vapour, valve body is in the limit inferior position under the effect of last thrust spring 6, make the radially open flow hole 14 that is arranged on the central tube by shutoff; Inject gas through being arranged at the vertical notes vapour through hole 13 on the upper limit plate 5, enter in the central lumen of valve body top, at this moment, the one way valve of being made up of valve body 7, spool 15 and following thrust spring 6 is opened under the gas pressure effect, realizes oil well notes vapour; In the vexed well open flow process, when strata pressure is higher than top of the present utility model oil column pressure, underground oil body will be by being arranged at the longitudinal hole on the lower limiting board 9, enter in the valve body chamber, valve body 7 will move up by the resistance of thrust spring 6 on overcoming under the effect of oil body pressure this moment, and then the radially open flow hole 14 that is arranged on central tube 4 tube walls is opened, make underground oil body radially realize the oil well open flow with the axial open flow passage 12 and the tubing string inner chamber that are positioned on the upper ring body in the open flow hole through this; Reduce to be higher than to annotate up to ground pressure and adopt conversion equipment 20 top head of liquid 0.2MP when following, valve body 7 moves down under last thrust spring 6 effects, and with hole 14 shutoff of described radially open flow, the open flow end.At this moment, can directly play dress insert pump 18, under the impact effect of oil pump whereabouts, the sliding plug assembly of the utility model will be cut off with the pin 3 that is connected between the outer tube, this connection is cut, thereby sliding plug assembly is sunk to porose plug 21 bottoms, and then the oil inlet passage 11 that is arranged on the outer tube wall is unlocked, realize that not kill-job is changeed to take out.

Claims

1. a viscous crude is exempted from kill-job and is annotated and adopt the one tubing string, and it comprises tail pipe, porose plug etc., it is characterized in that being connected to annotate between tail pipe and the porose plug adopting conversion equipment, this device by outer tube, slide to fill in etc. and form; Sliding plug by central tube and be positioned on its vertical two ends cylindrical on, lower ring body constitutes, be shaped on vertical open flow passage on the upper ring body, fixedly install in the central lumen porous on, lower limiting board, make radially open flow hole on the central tube tube wall between the two, slide in this central lumen valve body is set, the air inlet lower end of valve body is provided with spool, and between spool and lower limiting board, be provided with down respectively between valve body upper end and the upper limit plate, last thrust spring, the sliding plug assembly of Xing Chenging is by on the sliding plug thus, lower ring body can be fixed in the outer tube upper chambers with cutting off, and makes described lower ring body form shutoff to the oil inlet passage that is arranged on the outer tube wall just.