CN2479204Y - Ultraheavy oil injection-production and sand-fill and -control integrated pipe string - Google Patents

Abstract

Disclosed is a pipe column of integrated injection and production, punching and preventing of the super-heavy crude. The pipe column progressively trip an injection and production pipe column, a sand removal nib, a mud anchor, a hollow pumping rod and a solid pumping rod into the oil-well to achieve gas injection and oil production. Because the technology of injection and production, punching and preventing of the pipe column without moving the pipe column is achieved during the production course, thereby protecting an annular tube effectively during gas injection and reduce the accidents. Further, the utility model can reduce the operation costs and increase the actual effect of oil-well, and reduce the labor strength and energy consumption, favor for protecting environment and obviously save the energy. Because the utility model is reasonable in structure and the down-hole operation is simple, the pipe column can be widely used in the production of heavy crude and super-heavy crude wells.

Description

Super thick oil filling is adopted the fill and-control integrated tubing string

The utility model relates to a kind of super thick oil filling and adopts the fill and-control integrated tubing string, belongs to super thickened oil steam-stimulated thermal production well lower tubular column class.

Viscous crude, special thickened oil recovery have big difficulty than general oil extraction, owing to the thick reason of oil, former oil require in the oilbearing stratum heat make it to become flow regime could be from the underground mining to ground, the current main cyclic steam stimulation method that adopts promptly makes underground viscous crude intensification viscosity reduction on ground by tubing string notes vapour in the well, and then flow to ground by crude oil by oil well pump and oil pipe, the method of present this heavy crude producing is mainly utilized two casing strings, promptly adopts instlated tubular, packer, flexible tubing string when annotating vapour; Adopt conventional oil tubing string and electrical heating hollow stem tubing string to finish during oil recovery; the subject matter that this technology exists is: the packer sealing that is lowered in the oil well is poor; the sleeve pipe heat waste is serious; thermal packer packing effect is bad; close sleeve pipe notes vapour method if adopt, do not have the effect of protective casing and minimizing wellbore heat loss again.In addition, when annotating vapour, concentrate at packer card envelope place casing stress, sleeve pipe is damaged, packer is stuck in well, causes workover.Cycle is short because super viscous crude is handled up in addition, make operation frequent, and conventional tubing string flow chart is many, it is general to shake out in the well, also need frequent sand washing pump detection and workover, cause operating cost high thus, rate when having reduced oil well production also can be brought heat-energy losses well-flushing polluted reservoir and increase the drawback that the instlated tubular cleaning charge is used.In the oil recovery process because super viscous crude production needs omnidistance companion's heat, and heat waste is big in the energy consumption height, oil well, although by the intermediate frequency electrical heating, right power still lower (power only reaches 60-70%); The utility model adopts notes to adopt the fill and-control integrated tubing string can solve oil jacket annular space heat-insulating problem in the above-mentioned oil well; can more effective protective casing, can also be implemented in immobile oil tubing string heavy crude producing in the oil well, reduce operating cost; reduce wellbore heat loss in the oil recovery process, cut down the consumption of energy.

The utility model is that a kind of special thick oil filling that provides in order to overcome above-mentioned shortcoming is adopted the fill and-control integrated tubing string.

The purpose of this utility model is achieved in that and inserts injection-production column jacket 1 successively one time in being lowered to the oil well of sleeve pipe, and the bar pump seat by screwed connection and seal pipe nipple 2, below pipe nipple, use screwed connection sand washing nib 4, in injection-production column jacket, be the oil recovery roofbolt, it is the hollow rod 6 that a cover is lowered in the above-mentioned tubing string successively, the solid sucker rod 7 and the insert pump 3 that are connecting with change snapping head have unfreezing joint 13 and plunger 14 on the piston in pump barrel 12, it below the pump sand control screen 5, the screen casing bottom a plug with screwed connection, during construction, the connection of an above-mentioned injection-production column jacket can be divided into three kinds according to oil well operation needs and connect the replacement combination: thermal insulation tubing, vacuum heat insulation tube and plain tubing.

This tubing string all adopts in oil casing annular space when annotating vapour and is incubated with the nitrogen-gas heat-insulating mode, annotating behind the vapour in the well directly, lower sucker rod changes oil pumping over to, after the production of recovering the oil finishes, trip out rod string, if the shaft bottom sand setting, directly sand washing, then change down the whole notes vapour-oil recovery of alternate water injection vapour-sand washing manufacturing process over to and adopt same tubing string, during operation, tubing string is motionless, only carries out rod job and just can.The operating principle of oil well pump is in this tubing string, terminate on the hollow rod on the solid sucker rod 7 during following pump, vertically sling, because pump barrel 12 enters the centre of fixture block 10 and outwards pushes the fixture block lower end, the upper end is inwardly shunk, pump inserts the down-hole in oil pipe, when arriving bar pump seat envelope pipe nipple 2 positions instantly, on the undergauge section of 8 present envelope pipe nipples 2 of seat envelope mandrel, at this moment, piston continues descending in pump barrel 12, unfreezing joint 13 breaks away from the fixture block center on the piston, and under spring 9 effects, outwards eject in the belt groove that enters bar pump seat envelope pipe nipple 2 upper end of fixture block 10, the pump housing is blocked, be anchored on the oil pipe.When playing pump, upwards carry the pump rod 7 of pumping, when unfreezing joint 13 on the piston entered fixture block 10 centers, fixture block moved outside the lower end, and regain the upper end, broke away from belt groove in the bar pump seat envelope pipe nipple 2 and unfreezing, and this moment, pump can propose seat envelope section to ground thereupon.

The utility model advantage is: adopt the fill and-control integrated tubular column structure owing to adopted to annotate; reduced a lower tubular column operation; thereby when having guaranteed that oil well is annotated the vapour effect; more effectively protected sleeve pipe; reduce the down-hole accident probability, in addition, realized fixed tubular column heavy crude producing measure in the oil well; reduced flow chart; reduce operating cost, rate when also having improved oil well, and greatly reduce labour intensity; help environmental protection; reduce the oil recovery energy consumption, energy-saving effect is remarkable: according to 46 wells time statistics, operating cost has reduced by 40%; the oil recovery energy consumption reduces by 60%, and only half a year, accumulative total wound effect reached 2,400,000 yuan.

The utility model is provided by following examples:

Below in conjunction with accompanying drawing the utility model is done further narration.

Accompanying drawing: the utility model structural representation.

Among the figure: unfreezing joint, 14 plungers, 15 sleeve pipes on 1 injection-production column jackets, 2 bar pump seats envelope pipe nipple, 3 rod-type pumping units, 4 sand washing nibs, 5 sand anchors, 6 hollow rods, 7 solid sucker rods, 8 envelope mandrels, 9 springs, 10 fixture blocks, 11 sealing rings, 12 pump barrels, 13 pistons

A kind ofly be used for super thick oil filling and adopt the fill and-control integrated tubing string, comprise by oil well inner sleeve 15 and injection-production column jacket 1 and forming; It is characterized in that injection-production column jacket 1 bar pump seat envelope pipe nipple 2 by screwed connection and sand washing nib 4 with screwed connection below pipe nipple; In injection-production column jacket be a cover oil recovery roofbolt it be the hollow rod 6 that in above-mentioned tubing string, is lowered to, and with becoming the insert pump 3 that the snapping head is connecting solid sucker rod 7 and bottom, in rod-type pump barrel 12, unfreezing joint 13 and plunger 14 on the piston are arranged, be sand control screen 5 below the pump, below the screen casing with the screw thread plug of ining succession.

Described insert pump specification is 70 millimeters of 44 millimeters of 57 millimeters φ of φ and φ.Injection-production column jacket size: 114 * 76 millimeters of external diameters * internal diameter φ, 114 * 62 millimeters of φ, 73 millimeters BCSG of 114 millimeters vacuum heat insulation tube+φ of φ link then bar pump seat envelope pipe nipple, the sand control screen diameter is 68 millimeters of φ, 54 millimeters of φ, 80 millimeters of φ, 68 millimeters of plug: diameter: φ, 80 millimeters of 54 millimeters of φ and φ, 73 millimeters of 89 millimeters of sand washing nib: φ, φ, 114 millimeters of φ.

Claims (2)

1, a kind of super thick oil filling is adopted the fill and-control integrated tubing string, comprises the sleeve pipe (15) and injection-production column jacket (1) composition of oil well the inside; It is characterized in that described injection-production column jacket (1) rod-type pump seat envelope pipe nipple (2) by screwed connection, below pipe nipple, sand washing nib (4) with screwed connection; It in injection-production column jacket a cover beam hanger post, it is to be lowered to hollow rod (6) and to connect the insert pump (3) of solid sucker rod (7) below reaching with becoming the snapping head in injection-production column jacket, in rod-type pump barrel (12), unfreezing joint (13) and plunger (14) on the piston are arranged, be sand control screen (5) below the pump, a plug with screwed connection below the screen casing.

2, thick oil filling according to claim 1 is adopted the fill and-control integrated tubing string, it is characterized in that the size of an injection-production column jacket is respectively

(1) external diameter * internal diameter φ is 114 millimeters * 76 millimeters, the oil pipe that φ is 114 millimeters * 62 millimeters;

(2) 114 millimeters vacuum heat insulation tubes of φ and 73 millimeters BCSG of φ link the combination of extension bar formula pump seat envelope pipe nipple;

(3) 80 millimeters of 54 millimeters φ of 68 millimeters φ of sand control screen: φ;

(4) 54 millimeters φ of 68 millimeters φ of plug diameter: φ 80 millimeters;

(5) sand washing nib: 89 millimeters, 73 millimeters of φ, 114 millimeters of φ;

(6) 44 millimeters of 57 millimeters of insert pump φ, φ and φ are 70 millimeters.