CN205047168U

CN205047168U - Pump operation technology is examined in electrical heating under high oil well with fixed attention

Info

Publication number: CN205047168U
Application number: CN201520559058.XU
Authority: CN
Inventors: 张洪新; 张越; 刘佳; 蔡亮; 阎凤莲
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-23
Filing date: 2015-07-23
Publication date: 2016-02-24
Anticipated expiration: 2025-07-23

Abstract

The utility model relates to a pump operation technology is examined in electrical heating under high oil well with fixed attention, by well workover car, cable car, cable, oil pipe, cable winch, sleeve pipe, a thermal -insulated section of thick bamboo, temperature measuring resistor, pressure sensor, an electrical heating section of thick bamboo, heating control group one -tenth, the utility model discloses novel structure, reasonable in design carries out the heating of well liquid through going into a cable and an electrical heating section of thick bamboo under in the oil pipe since in oil pipe the construction operation, lower incomes of a cable and an electrical heating section of thick bamboo is nimble without hindrance, the probability of operation troubles such as card cable is very little, has solved highly to congeal oil oil pumping after examining the pump operation and solidify the problem of suppressing the pump, because the method that adopts physics to heat, does not have any pollution to the oil reservoir, has reduced manufacturing cost, has improved the operating efficiency.

Description

Electrical heating pump detection and workover technique under a kind of high-solidifiability oil well

Technical field:

The utility model relates to electrical heating pump detection and workover technique under a kind of high-solidifiability oil well, belongs to process for petroleum recovery technology type.

Background technology:

At present, when what petroleum recovering was produced carries out pump detection and workover, first sucker rod is tripped out from oil pipe, then oil pipe and oil well pump are tripped out from down-hole, after changing new oil well pump, to have in oil pipe and oil well pump lower going-into-well again, the sucker rod finally entering to be connected with down plunger pump rod is from oil pipe in lower going-into-well, because oil well is darker, the activity duration of lift pipe string is longer, for the well of 2000 ~ 3000 meters, from tripping out the operation of tubing string to running string again, need tens hours, or even several days, subzero crude oil operation for routine does not have any problem, for the solidifying oil of height, crude oil will solidify the temperature of 40 ~ 50 degree, when operation do not pumped by oil well, height in pit shaft coagulates oil temperature can be reduced gradually, will solidify after freezing point, in well liquid around pit shaft, just have the oil clot of a lot of condensation, go into the well after inspection pump, when installing sucker rod oil pumping operation, the oil clot solidified will block the fuel feed hole of pump barrel, the load increase of oil well pump is unable to lift and cannot be normally worked, for this reason, when the pump detection and workover of high-solidifiability oil well, enter tubing string under inspection pump after, need to inject diverting agent in well, then oil circulation remaining in well is replaced out ground by injected clear water, and then under enter plunger and sucker rod, after first the water in pit shaft being drained, could be normally fuel-displaced, at this moment from the solidifying oil of the height stratum because temperature is high, guarantee does not solidify, directly from oil pipe, be continuously extracted into ground, the diverting agent added is in order to anti-sealing enters into oil reservoir hole polluted reservoir, but the in fact limited efficiency of diverting agent, certain water is usually had to enter stratum, oil reservoir is polluted, the time of drawing water is also very long, for 3000 meters of dark oil wells, sometimes 1 ~ 3 day time is taken, water in pit shaft could be exhausted, draw water and oil layer pollution, have impact on oil producing operation.

Utility model content:

The purpose of this utility model is to provide electrical heating pump detection and workover technique under a kind of high-solidifiability oil well.

The technical solution of the utility model is as follows: under this kind of high-solidifiability oil well, electrical heating pump detection and workover technique is by well maintenance vehicle, cable car, cable, oil pipe, cable reel, sleeve pipe, heat insulation cylinder, pressure sensor, temperature detecting resistance, electric heating tube, heating control cabinet forms, its structure assembled relation is as follows: under the winch of the well workover derrick of standard, be provided with assembly pulley, assembly pulley is wound with cable, the one ends wound of cable is on the cylinder of cable reel, the termination of this section of cable is connected to electric heating control cashier's office in a shop, the other end of cable is connected with heat insulation cylinder, electric heating tube is connected with under heat insulation cylinder, pressure sensor and temperature detecting resistance is provided with in heat insulation cylinder, sleeve pipe sealing in the wellbore, in sleeve pipe, subordinate has tubing string.

First sucker rod is tripped out from oil pipe during use, then oil pipe and oil well pump are tripped out from down-hole, after changing new oil well pump, by tubing string, oil well pump is sent into down-hole again, at this moment, first will inject a certain amount of clear water in well, then the cable car that thousands of meters of cables are housed is called in well site, to the cable of electric heating tube be connected through in oil pipe in workover frame pulley lower going-into-well, firing cable winch is inchmeal by the cable lower going-into-well of thousands of meters, finally be lowered into oil well pump place, after check circuit fault-free, cable is accessed electric heating control cabinet, energising is heated to the electric heating tube in shaft bottom, temperature in pit shaft is measured by the temperature detecting resistance in heat insulation cylinder, fluid pressure in well is measured by pressure sensor, extrapolate the height of liquid in well, the information collected is sent in heating control cabinet by cable, demonstrate fluid pressure in heating-up temperature and well, by transferring and upper body winch cable, liquid in whole well is made all to be heated to above temperature enough in crude oil freezing point, after the preparation completing underground sucker rod operation, actuating cable car takes out cable and cartridge heater from well in oil pipe rapidly, then rapidly under enter oil pump plunger piston and sucker rod, open oil pumper, when height in well coagulates fluid body ot-yet-hardened, crude oil is retracted to ground from shaft bottom.

The utility model novel structure, reasonable in design, by entering cable under in oil pipe and electric heating tube carries out the heating of well liquid, owing to being construction operation in oil pipe, enter without hindrance flexibly under cable and electric heating tube, the probability of the operation faults such as card cable is very little, this technique can prevent the oil pumping after pump detection and workover of high solidifying oil from solidifying the problem of suppressing pump effectively, owing to adopting the method for physical heating, to oil reservoir without any pollution, overcome and inject chemical temporary blocking agent and water filling in technique to the pollution of oil reservoir in the past, cable and electric heating tube can be reused, reduce the cost of production of chemicals and water filling, improve operating efficiency.

Accompanying drawing illustrates:

Fig. 1 is general structure schematic diagram of the present utility model.

Detailed description of the invention: the explanation of well one step is done to enforcement of the present utility model below in conjunction with accompanying drawing.

As shown in Figure 1, the utility model is by well maintenance vehicle 1, cable car 2, cable 3, oil pipe 4, cable reel 5, sleeve pipe 6, pressure sensor 7, heat insulation cylinder 8, temperature detecting resistance 9, electric heating tube 10, heating control cabinet 11 forms, its structure assembled relation is as follows: on the winch assembly pulley of the workover frame 1 of standard, be wound with cable 3, the one ends wound of cable 3 is on the cylinder of cable car 2, the termination of this section of cable 3 is connected on electric heating control cabinet 11, the other end of cable 3 is connected with heat insulation cylinder 8, heat insulation cylinder is connected with electric heating tube 10 8 times, pressure sensor 7 and temperature detecting resistance 9 is provided with in electric heating tube 10, sleeve pipe 6 sealing in the wellbore, in sleeve pipe 6, subordinate has oil pipe 4 post.Cable 3 is the cables having power and signal concurrently.

Heat insulation cylinder 8 is made up of heat-barrier materials such as pottery, carbon fiber, plastics, is used for intercepting the heat conduction of electric heating tube 10, makes temperature detecting resistance 9 can measure true temperature in well, reduces the operating ambient temperature of pressure sensor 7 simultaneously, prevent its heat damage.

Its structural housing of electric heating tube 10 is metal cylinder housing, and inside is provided with carbon fiber electrical heating or metal electric heated filament.

Workover frame 1, cable car 2, oil pipe 4, cable reel 5, sleeve pipe 6 are all standard device and the device of petroleum production operation.

Heating control cabinet 11 is made up of circuit board and cable reel 5 control unit, thermometric detecting unit, pressure sensing cell, and be provided with display screen, can according to heating-up temperature, automatic adjustment cable reel 5 promotes and transfers, when carrying out lower plunger and sucker rod operation prepares, automatically thermostatic control can be carried out.

Claims

1. under a high-solidifiability oil well electrical heating pump detection and workover technique by well maintenance vehicle (1), cable car (2), cable (3), oil pipe (4), cable reel (5), sleeve pipe (6), pressure sensor (7), heat insulation cylinder (8), temperature detecting resistance (9), electric heating tube (10), heating control cabinet (11) forms, its structure assembled relation is as follows: the winch assembly pulley of workover frame (1) is passed in one end of cable (3), be wound around again on cable car (2) cylinder and draw after some circles, finally be connected on electric heating control cabinet (11), the other end of cable (3) is connected with the heat insulation cylinder (8) under lower going-into-well, electric heating tube (9) is connected with under heat insulation cylinder (8), pressure sensor (7) and temperature detecting resistance (9) is provided with in heat insulation cylinder (8), sleeve pipe (6) sealing in the wellbore, oil pipe (4) post is had the interior subordinate of sleeve pipe (6).