CN204984334U - Rotary blowout preventer - Google Patents
Rotary blowout preventer Download PDFInfo
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- CN204984334U CN204984334U CN201520577724.2U CN201520577724U CN204984334U CN 204984334 U CN204984334 U CN 204984334U CN 201520577724 U CN201520577724 U CN 201520577724U CN 204984334 U CN204984334 U CN 204984334U
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- blowout preventer
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Abstract
The utility model discloses a rotary blowout preventer, including last casing, down the casing formed of casing rigid coupling is from last top spin rotary drum, top cap and the go -between of rigid coupling in proper order installed under to in the casing, install the sealed core of gluing in the inner chamber of top cap, install in the go -between inner chamber piston and with the under bracing section of thick bamboo of piston rigid coupling, all install rotatory movive seal piece between top spin rotary drum, go -between and the casing, footstep bearing is installed to the top cap periphery, the go -between periphery is installed and is held up positive axial to hold, is held up positive axial to hold down, upward offered enterprising oil -out on the casing offered down on the casing down and passed in and out the hydraulic fluid port. The utility model discloses the problem that the highest pressure of rotary blowout preventer can not meet the demands in the time of can solving the pressure overhaul operation of water injection well and low middling pressure gas well area.
Description
Technical field
The utility model relates to petroleum machinery, is specifically applied to the rotating blowout preventer of water injection well in oil fields, mesolow gas well heavy repair task with pressure.
Background technology
Past oil and gas wells in oil fields, water injection well operation all adopt kill-job or open flow mode to carry out, not only cause the severe contamination of formation and the pollution to ground, also can affect produce oil, aerogenesis and flood effectiveness after operation, also to try every possible means all to pump out noting the well killing fluid of entering, cause the workload after well workover greatly to increase, time-consuming, take a lot of work, expensive.Nearly ten years, Operating Pressure is widelyd popularize in oil field, and open flow, no killing well do not put forward down-hole string to compress into again when there being pressure.This way is each elephant all-round popularization in the whole nation at present, but in operation process, often the breakage of generation down-hole oil tube fractures, foreign matter falls in well needs to carry out the situation of salvaging etc., must rotate by drilling rod the same as rig when there are these situations, load onto various different salvaging below, wear away, the instrument such as hitch carries out workover treatment, because there is pressure down-hole, must drilling rod be sealed in rod boring process, thus just not reach by conventional Operating Pressure method and require that.Must use high pressure rotary universal blowout preventer in the case, the glue core of rotating blowout preventer inside and miscellaneous part all together will rotate in company with drilling rod and want sealing drilling rod and well head to ensure not leak.Because this special preventer accuracy of manufacture is high, structure is more complicated, passive type self-sealing head is all adopted to carry out the method for seal drill rod to realize drillng operation with pressure at present, because self-sealing head seal drill rod mainly seals by the glue core elasticity of self-sealing head, once wearing and tearing will change self-sealing rubber core, glue core is changed frequent, delay the activity duration, self-styled effect is low, and the highlyest can only seal 7MPa.Thus underbalance kill job is adopted to come drilling well, well workover at present.But, to water injection well and gas well because a region has many mouthfuls of water injection wells to carry out water filling, after stopping note a bite water injection well, other wells are also in water filling, below stratum, water route communicates, the water injection well Pressure Drop stopping noting not to get off, by the reason that the kill-job of underbalance kill-job way is flowed because of mine water, time pressure has come up again for a moment, and the way of no killing well, not open flow thus can only be adopted to the well that carries out large repairs.Because general water injection well pressure is all between 10 ~ 20MPa, adopts the fairly simple the highest envelope pressure of passive type rotating blowout preventer can only reach 7MPa, can not instructions for use be met.
Utility model content
The purpose of this utility model is just to provide a kind of rotating blowout preventer, with solve water injection well and low in calm the anger well heavy repair task with pressure time the rotating blowout preventer the highest envelope pressure problem that can not meet the demands.
The utility model is achieved in that
Rotating blowout preventer, comprises the housing of upper shell, the affixed composition of lower house, it is characterized in that, be provided with affixed successively upper rotating cylinder, top cover and connecting ring in housing from top to bottom; In the inner chamber of described top cover, packing unit is installed; Piston and the lower support cylinder affixed with piston are installed in connecting ring inner chamber; On described rotating cylinder, between connecting ring and housing, rotary dynamic seal part is all installed; In described top cover periphery, thrust bearing is installed; In described connecting ring periphery, alignment bearing, lower alignment bearing are installed; Described upper shell offers oil inlet and outlet, described lower house offers lower oil inlet and outlet.
Described hull outside is provided with accumulator, and described accumulator is communicated with described housing cavity by connecting pipeline.
Described connecting pipeline is provided with high-pressure ball valve.
Kelly bar slips is connected on described in rotating cylinder.
Rotating blowout preventer designed by the utility model, makes piston stroking upward by the mode increasing hydraulic pressure, realizes sealing, thus service time is increased greatly after packing unit wearing and tearing.The utility model movable sealing pressure can reach 21MPa, static seal pressure can reach 35MPa, use the utility model can solve the pollution problem on stratum, ground, extending water injection well, gas well liquid loading life-span, is the developing direction of water injection well in oil fields, mesolow gas well heavy repair task with pressure from now on.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the sectional view of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is further described
In Fig. 1, Fig. 2,1, lower house; 2, lower oil inlet and outlet; 3, lower alignment bearing; 4, piston; 5, packing unit; 6, top cover; 7, upper shell; 8, thrust bearing; 9, upper rotating cylinder; 10, upper oil inlet and outlet; 11, lower support cylinder; 12, connecting ring; 13, kelly bar slips; 14, accumulator; 15, high-pressure ball valve; 16, union interface.
Shown in Fig. 1, Fig. 2, rotating blowout preventer comprises upper shell 7, lower house 1 is connected by the body connecting bolt of high strength, form one through the seal casinghousing of 70MPa pressure bearing and seal inspection, the mechanical action of inner all parts is remained in an effective sealed environment.Upper rotating cylinder 9 affixed successively, top cover 6 and connecting ring 12 are installed from top to bottom in housing.Upper rotating cylinder 9 is linked together by securing member with top cover 6, is combined between top cover 6 with connecting ring 12 by groove with the mode of fin.Upper rotating cylinder adopts high-abrasive material to make, in upper rotating cylinder 9, be connected to kelly bar slips 13.In the inner chamber of top cover 6, be provided with spherical sealed glue core 5, packing unit adopts resistant to elevated temperatures material to make.Piston 4 and the lower support cylinder 11 affixed with piston 4 are installed in connecting ring 12 inner chamber.Spherical sealed glue core 5 is positioned at above piston 4, and piston 4 compresses spherical sealed glue core 5 under the powered of hydraulic medium, and packing unit 5 shrinks under top cover 6 acts on holds the drilling rod be installed in kelly bar slips 13 tightly, realizes the sealing of packing unit to drilling rod.At upper rotating cylinder 9, between connecting ring 12 and corresponding inner walls, rotary dynamic seal part is all installed, for ensureing sealing performance under the circumference of the high-speed rotation.In top cover 6 periphery, thrust bearing 8 is installed, to reduce the axial rub between all rotatable parts and housing, is subject to hydraulic medium at each rotating parts and promotes to bear top power when moving upward.In connecting ring 12 periphery, alignment bearing 17, lower alignment bearing 3 are installed, reduce the radial friction of all rotatable parts and housing, avoid possible the radially wobbling of rotating parts.Connecting ring 12 lower end is provided with a circle steel ball, alleviates issuable friction.
Shown in Fig. 1, the utility model is provided with accumulator 14 as buffer in hull outside, to absorb the hydraulic shock that rotating blowout preventer oil cylinder produces because of sudden volume change.Accumulator 14 is communicated with housing cavity by union interface 16, connecting pipeline 18, and connecting pipeline 18 is provided with high-pressure ball valve 15.The utility model offers oil inlet and outlet 10 on upper shell 7, and lower house offers lower oil inlet and outlet 2, defines into, oil return line, for providing preventer work and cooling and lubricating hydraulic oil used with the gap in inner walls.
The utility model adopts special Control System Design, ensures that hydraulic oil pressure force rate mud pressure at least exceeds 7MPa all the time, prevents mud anti-channeling from entering the normal work of hydraulic system destruction system.
Rotating blowout preventer in the course of the work; method of operating routinely; by being connected to upper oil inlet and outlet 10, the lower oil inlet and outlet 2 on the liquid controling pipe line of hydraulic system; the action of control piston and ball core, to open or sealing drilling rod, the hydraulic oil simultaneously passed in and out carries out filtration cooling through circulating cooling system; avoid Hydraulic Elements to damage; dispel the heat in time to preventer, each glue part on protection preventer, each parts of bearings is by high temperature simultaneously.
Claims (4)
1. rotating blowout preventer, comprises the housing of upper shell, the affixed composition of lower house, it is characterized in that, be provided with affixed successively upper rotating cylinder, top cover and connecting ring in housing from top to bottom; In the inner chamber of described top cover, packing unit is installed; Piston and the lower support cylinder affixed with piston are installed in connecting ring inner chamber; On described rotating cylinder, between connecting ring and housing, rotary dynamic seal part is all installed; In described top cover periphery, thrust bearing is installed; In described connecting ring periphery, alignment bearing, lower alignment bearing are installed; Described upper shell offers oil inlet and outlet, described lower house offers lower oil inlet and outlet.
2. rotating blowout preventer according to claim 1, is characterized in that, described hull outside is provided with accumulator, and described accumulator is communicated with described housing cavity by connecting pipeline.
3. rotating blowout preventer according to claim 2, is characterized in that, described connecting pipeline is provided with high-pressure ball valve.
4. rotating blowout preventer according to claim 1, is characterized in that, is connected to kelly bar slips on described in rotating cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520577724.2U CN204984334U (en) | 2015-08-04 | 2015-08-04 | Rotary blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520577724.2U CN204984334U (en) | 2015-08-04 | 2015-08-04 | Rotary blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204984334U true CN204984334U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520577724.2U Active CN204984334U (en) | 2015-08-04 | 2015-08-04 | Rotary blowout preventer |
Country Status (1)
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| CN (1) | CN204984334U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285545A (en) * | 2016-10-11 | 2017-01-04 | 中国石油集团渤海钻探工程有限公司 | Continuous cyclic drilling realizing active sealing formula swivel control head and upper shackle method thereof |
| CN110529066A (en) * | 2019-07-12 | 2019-12-03 | 中国石油化工股份有限公司 | Blowout-preventing choke plug is used in well testing test |
| CN110939401A (en) * | 2020-01-02 | 2020-03-31 | 河北新铁虎石油机械有限公司 | Quincunx plate type pressure control device |
| CN113775312A (en) * | 2021-10-27 | 2021-12-10 | 四川艾文思创能源科技有限公司 | Rotary load-bearing flashboard |
-
2015
- 2015-08-04 CN CN201520577724.2U patent/CN204984334U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285545A (en) * | 2016-10-11 | 2017-01-04 | 中国石油集团渤海钻探工程有限公司 | Continuous cyclic drilling realizing active sealing formula swivel control head and upper shackle method thereof |
| CN106285545B (en) * | 2016-10-11 | 2019-04-12 | 中国石油集团渤海钻探工程有限公司 | Continuous cyclic drilling realizing active sealing formula swivel control head and thereon shackle method |
| CN110529066A (en) * | 2019-07-12 | 2019-12-03 | 中国石油化工股份有限公司 | Blowout-preventing choke plug is used in well testing test |
| CN110529066B (en) * | 2019-07-12 | 2021-10-29 | 中国石油化工股份有限公司 | Blowout prevention plug for well testing |
| CN110939401A (en) * | 2020-01-02 | 2020-03-31 | 河北新铁虎石油机械有限公司 | Quincunx plate type pressure control device |
| CN113775312A (en) * | 2021-10-27 | 2021-12-10 | 四川艾文思创能源科技有限公司 | Rotary load-bearing flashboard |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |