CN205876243U - Overall process under balance pressure drilling accuse pressure equipment is put - Google Patents
Overall process under balance pressure drilling accuse pressure equipment is put Download PDFInfo
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- CN205876243U CN205876243U CN201620674281.3U CN201620674281U CN205876243U CN 205876243 U CN205876243 U CN 205876243U CN 201620674281 U CN201620674281 U CN 201620674281U CN 205876243 U CN205876243 U CN 205876243U
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Abstract
The utility model relates to an oil gas field under balance pressure drilling technical field is an overall process under balance pressure drilling accuse pressure equipment is put. Including wellhead blowout preventer group, spin control head, down hole sleeve valve, casing string. The utility model discloses an adjust the degree of opening of special choke manifold choke valve, apply reasonable back pressure at the well head, realize dynamic control bottom pressure to realize continuous underbalance drilling operation. Through the compounding practice of the continuous perfusion device of ground drilling fluid, special choke manifold, spin control head and down hole sleeve valve, real time compensation pit shaft hydrostatic column pressure is worth with regulation well head back pressure, reaches the purpose of dynamic control pit shaft pressure, makes the shaft bottom be in the controllable balanced state that owes all the time to the effective control plays to run the drilling tool into the well in -process stratum fluid and invades the volume of pit shaft, is favorable to protective oil gas field reservoir and has effectively ensured drilling operation's security. The utility model discloses surface equipment simple structure, easy and simple to handle, can be extensive be applied to among the overall process underbalance drilling operation.
Description
Technical field
This utility model relates to oil gas field under-balanced drilling technology field, is a kind of overall process under-balance drilling pressure control dress
Put.
Background technology
After entering 21st century, under-balanced drilling technology develops rapidly, but with regard to current under balance pressure drilling technique
Speech, modal remain simple underbalance and creeps into, and it can not realize the purpose of wellbore construction total process protective oil-gas Layer, main
It is embodied in and makes a trip on operation imperfection；For avoiding occurring overflow, blowout etc. complicated or accident, need before trip-out to note in pit shaft
Entering and heavily starch equilibrium strata pressure, after focusing on slurry operation process and injecting, bore hole oil-gas Layer is in overbalance state, thus loses and owe
Balance creeps into the achievement of stage reservoir protec-tion.
Under balance pressure drilling process implementing process is i.e. crept into, in round trip, metastable in remaining well owe flat
Weighing apparatus state is most important to reservoir protection and drilling safety；Under normal circumstances, we will creep into, round trip process is all protected
Hold the bottom pressure drillng operation mode less than strata pressure, referred to as overall process under-balance drilling.At present, field of oil drilling
The method realizing overall process under-balance drilling has two kinds: one be use non-snubbing service device (Snubbing Unit, specially
Profit number 02133948.1), the second is to use down hole sleeve valve (Down-Hole Deployment Valve, the patent No.
200610005543.8).The method using down hole sleeve valve to realize overall process under-balance drilling is summarized as follows: trip-out process well head
With pressure, when drill bit is under down hole sleeve valve, execute back pressure with the use of swivel control head, special choke manifold at well head, real
The now dynamic control to wellbore pressure；Drill bit rises to time more than down hole sleeve valve, by ground control unit closed-in well setting of casing
Jam pot cover is every pit shaft, and now well head is the most with pressure, implements routine and propose brill operation after detachable swivel control head.Lower drill bit is close to down-hole
During casing valve, setting well mouth rotary controls head and connects kelly bar, and the small displacement turn on pump assisting in opening down hole sleeve valve that builds the pressure drives a well, and drives a well
After lay down kelly bar implement tripping operation；Going down process executes back pressure with the use of swivel control head, special choke manifold at well head
Realize the dynamic control to wellbore pressure.
From the foregoing, use down hole sleeve valve to realize the method for overall process under-balance drilling there are following two point defects:
One is a lack of trip-out operation process to the Continuous Compensation of pit shaft liquid column hydrostatic pressure or control.As implemented to pull out of hole in natural gas reservoirs
Operation, gas expands after invading pit shaft, slips rising, is easily caused grouting amount less than tripping out drilling tool volume, in order to control reasonably
Shaft bottom under-voltage value, trip-out wellhead back pressure controlling value will improve constantly；The natural gas simultaneously risen easily forms trap pressure at well head
Power, causes wellhead over-pressure jeopardize drilling safety or make shaft bottom lose under-balanced state.Two is that band pressure brill need to connect kelly bar turn on pump
Assisting in opening down hole sleeve valve, operation sequence is loaded down with trivial details.
Summary of the invention
This utility model provides a kind of overall process under-balance drilling pressure control device, overcome above-mentioned prior art no
Foot, its can effectively solve the trip-out process of existing under-balance drilling operation lacks the Continuous Compensation to pit shaft liquid column hydrostatic pressure and
The problem controlled, more effectively solving existing band pressure brill needs user's drilling rod turn on pump to carry out assisting in opening down hole sleeve valve, its behaviour
The problem making program very complicated.
The technical solution of the utility model is realized by following measures: a kind of overall process under-balance drilling pressure control dress
Put, including wellhead blowout preventor group, swivel control head, down hole sleeve valve, casing string, circulation of drilling fluid processing means, special throttling
Manifold, drilling pump group, there is detection injection pressure and the drilling fluid continuous pouring device of flow and can switch down hole sleeve valve
Ground control unit, down hole sleeve valve is fixedly mounted on the casing string on upper strata, and the outlet of ground control unit and down-hole are overlapped
Being linked together by pipeline between pipe valve, the casing string top above down hole sleeve valve is the most sequentially installed with
Swivel control head and wellhead blowout preventor group, the outlet of drilling fluid continuous pouring device and the grouting mouth of swivel control head pass through pipeline
One is fixed together, and the entrance of drilling fluid continuous pouring device and the outlet of circulation of drilling fluid processing means are by pipeline two
Link together, pipeline one is installed with ball-and-seat and switch valve, solid between the import of pipeline two and drilling pump group
Determine connection and have pipeline three, between the outlet and the top inlet of swivel control head of drilling pump group, be fixedly connected with pipeline four,
It is fixed together, at special choke manifold by pipeline five between bypass flange and the special choke manifold of swivel control head
On be installed with exhaust line, exhaust line is installed with liquid-gas separator, liquid-gas separator and circulation of drilling fluid
Processing means is fixedly installed togather by pipeline six.
Further optimization and/or improvements to above-mentioned utility model technical scheme are presented herein below:
Above-mentioned circulation of drilling fluid processing means can include surge tank and at least one circulating tank, solid in the outlet of pipeline six
Determining connection has surge tank, surge tank to be fixed together by pipeline seven with circulating tank, and circulating tank is fixing with pipeline two to be connected
Together；It is provided with vibrosieve and deaerator in described surge tank, is connected and each circulation between two adjacent circulating tanks
Desander all it is installed with in tank.
Above-mentioned drilling fluid continuous pouring device can include drilling fluid charge pump, the first Pressure gauge and flow monitoring meter, pipeline
The outlet of two is connected with the import of drilling fluid charge pump, and drilling well perfusion delivery side of pump is connected with the import of pipeline one, and first
Pressure gauge and flow monitoring meter are all fixedly mounted on the exit of drilling fluid charge pump.
Above-mentioned kill manifold and the choke manifold of may also include heavily starches tank with at least one, heavily starches outlet and the drilling pump group of tank
Between be fixedly connected with pipeline eight, between the entrance and pipeline four of kill manifold, be fixedly connected with pipeline nine, kill manifold
Outlet is fixedly connected on the casing string on down hole sleeve valve top, and the entrance of choke manifold is by pipeline ten and down hole sleeve valve
The casing string in portion is fixing to be connected, and the outlet of choke manifold is fixedly connected with relief line, blowout prevention pipeline is fixedly connected with overfall
Pipeline, the outlet of overfall pipeline is fixing with surge tank to be connected.
Above-mentioned pipeline five can be high-pressure fire hose；Or/and, can be fixedly connected with between choke manifold and special choke manifold
High-pressure fire hose.
Above-mentioned ground control unit can be manual pressuring pump, manually suppresses between delivery side of pump and down-hole casing valve inlet solid
Determine connection and have pipeline 11 and pipeline 12.
This utility model, by regulating the open degree of special choke manifold choke valve, applies rational back pressure at well head, real
The most dynamically control bottom pressure, thus realize continuous print under-balance drilling operation.By ground drilling liquid continuous pouring device, specially
With choke manifold, swivel control head and the compounding practice of down hole sleeve valve, real-Time Compensation pit shaft liquid column hydrostatic pressure and regulation well head
Back pressure value, reaches dynamically to control the purpose of wellbore pressure, makes shaft bottom be in controlled under-balanced state all the time, thus effectively controls
During making a trip, formation fluid invades the amount of pit shaft, is conducive to protection oil gas field reservoir the effective guarantee peace of drillng operation
Quan Xing.This utility model ground installation simple in construction, easy and simple to handle, overall process under-balance drilling operation can be widely used in
In.
Accompanying drawing explanation
Accompanying drawing 1 is the connection diagram of this utility model embodiment 1.
It is wellhead blowout preventor group that coding in accompanying drawing is respectively as follows: 1, and 2 is swivel control head, and 3 is down hole sleeve valve, and 4 attach most importance to
Slurry tank, 5 is circulating tank, and 6 is special choke manifold, and 7 is drilling pump group, and 8 is pipeline one, and 9 is kill manifold, and 10 is the first pressure
Table, 11 is flow monitoring meter, and 12 is drilling fluid charge pump, and 13 is bypass flange, and 14 is high-pressure fire hose, and 15 is choke manifold,
16 is casing string, and 17 is blowout prevention pipeline, and 18 is the second Pressure gauge, and 19 is choke valve, and 20 is liquid-gas separator, and 21 is exhaustor
Line, 22 is pipeline two, and 23 is surge tank, and 24 is vibrosieve, and 25 is deaerator, and 26 is desander, and 27 is manual pressuring pump, and 28 are
Pipeline 11,29 is pipeline 12, and 30 is switch valve, and 31 is ball-and-seat, and 32 is pipeline three, and 33 is pipeline four, and 34 is pipeline five,
35 is pipeline six, and 36 is pipeline seven, and 37 is pipeline eight, and 38 is pipeline nine, and 39 is pipeline ten, and 40 is overfall pipeline.
Detailed description of the invention
This utility model is not limited by following embodiment, can come with practical situation according to the technical solution of the utility model
Determine specific embodiment.
In this utility model, for the ease of describing, the description of the relative position relation of each parts is all according to description
The Butut mode of accompanying drawing 1 is described, such as: the position relationship of forward and backward, upper and lower, left and right etc. is based on Figure of description
Butut direction determine.
Below in conjunction with embodiment and accompanying drawing, this utility model is further described:
Embodiment 1: as shown in Figure 1, this overall process under-balance drilling pressure control device includes wellhead blowout preventor group 1, rotates
Control 2, down hole sleeve valve 3, casing string 16, circulation of drilling fluid processing means, special choke manifold 6, drilling pump group 7, have
Detect injection pressure and the drilling fluid continuous pouring device of flow and the ground control unit of down hole sleeve valve 3, well can be switched
Pipe valve 3 of trapping is fixedly mounted on the casing string 16 on upper strata, by pipe between outlet and the down hole sleeve valve 3 of ground control unit
Line links together, and casing string 16 top above down hole sleeve valve 3 is the most sequentially installed with swivel control head 2
With wellhead blowout preventor group 1, the outlet of drilling fluid continuous pouring device is fixed by pipeline 1 with the grouting mouth of swivel control head 2
Linking together, the entrance of drilling fluid continuous pouring device is connected by pipeline 2 22 with the outlet of circulation of drilling fluid processing means
Together, pipeline 1 is installed with ball-and-seat 31 and switch valve 30, pipeline 2 22 and drilling pump group 7 import it
Between be fixedly connected with pipeline 3 32, between the outlet and the top inlet of swivel control head 2 of drilling pump group 7, be fixedly connected with pipe
Line 4 33, is fixedly connected on one by pipeline 5 34 between the bypass flange 13 and special choke manifold 6 of swivel control head 2
Rise, special choke manifold 6 is installed with exhaust line 21, exhaust line 21 is installed with liquid-gas separator
20, liquid-gas separator 20 is fixedly installed togather by pipeline 6 35 with circulation of drilling fluid processing means.
Circulation of drilling fluid processing means, drilling fluid continuous pouring device are existing public technology.
During making a trip, injecting drilling fluid by circulation of drilling fluid processing means in well, real-Time Compensation pit shaft is quiet
Column pressure, to keep the stable liquid column hydrostatic pressure of pit shaft, regulates the open degree of choke valve 19 on special choke manifold 6, controls
Enter drilling well liquid measure in pit shaft to maintain constant wellhead back pressure；It follows that by circulation of drilling fluid processing means and joint
The mating reaction of flow tube remittance 6, it is possible to realize dynamically controlling bottom pressure, thus realize continuous print under-balance drilling operation.
Ground control unit, in order to switch down hole sleeve valve 3, need to connect kelly bar turn on pump auxiliary relative to existing band pressure brill
For opening down hole sleeve valve, more simplified by the operation sequence of ground control unit switch down hole sleeve valve 3.
Here, the second Pressure gauge 18 on special choke manifold 6 can monitor wellhead back pressure value, record well head when i.e. pulling out of hole
The controlling value of back pressure, can make wellhead back pressure value return with well head when pulling out of hole by the size of regulation choke valve 19 flow when lower boring
Pressure controlling value is equal, reaches dynamically to control the purpose of wellbore pressure.At drill bit drilling process, by regulating special choke manifold 6
On the open degree of choke valve 19, apply rational back pressure at well head, it is achieved dynamically control bottom pressure, thus realize continuous print
Under-balance drilling operation；In going down process, trapped pressure in well, can be there is when down hole sleeve valve 3 is with pressure, can be by regulation
The open degree of the choke valve 19 on special choke manifold 6 makes its circulating with choke, discharges trapped pressure, makes shaft bottom in going down process
All the time metastable under-balanced state it is in.
According to actual needs above-mentioned overall process under-balance drilling pressure control device can be made further optimization and/or improvements:
As shown in Figure 1, circulation of drilling fluid processing means includes surge tank 23 and at least one circulating tank 5, at pipeline six
Being fixedly connected with surge tank 23 in the outlet of 35, surge tank 23 is fixed together by pipeline 7 36 with circulating tank 5, circulation
Tank 5 is fixed together with pipeline 2 22；Vibrosieve 24 and deaerator 25, adjacent two it are provided with in described surge tank 23
It is connected between circulating tank 5 and in each circulating tank 5, is all installed with desander 26.Vibrosieve 24 is installed in surge tank 23 use
In the landwaste removed in drilling fluid, deaerator 25 is mainly used in further clean drilling liquid, makes scattered formation gas in drilling fluid
Body spins off.Desander 26 is installed here in circulating tank 5 for removing the landwaste in drilling fluid further.Vibrosieve 24,
Deaerator 25 and desander 26 are existing public equipment.
As shown in Figure 1, drilling fluid continuous pouring device includes drilling fluid charge pump the 12, first Pressure gauge 10 and flow prison
Surveying meter 11, the outlet of pipeline 2 22 is connected with the import of drilling fluid charge pump 12, the outlet of drilling well charge pump 12 and pipeline 1
Import be connected, the first Pressure gauge 10 and flow monitoring meter 11 are all fixedly mounted on the exit of drilling fluid charge pump 12.This
In, the first Pressure gauge 10 is mainly used in the pressure of monitoring perfusion drilling fluid, when pressure reaches the back pressure value of well head conservative control,
Drilling fluid charge pump 12 can be closed；When pressure is less than the back pressure value of well head conservative control, drilling fluid charge pump 12 can be opened, pressure
Power rises to well head and controls to turn off drilling fluid charge pump 12 during back pressure value.Pit shaft can be monitored in real time by flow monitoring meter 11
The row of drilling fluid is for amount.Drilling fluid charge pump 12 by with the joining of swivel control head 2, down hole sleeve valve 3 and special choke manifold 6
Closing operation, it is achieved with pressure make a trip and dynamically control wellbore pressure, makes shaft bottom be in controlled under-balanced state all the time, thus has
Imitate formation fluid during controlling to make a trip and flow into the flow of pit shaft, be conducive to protection reservoir and ensure drilling safety and this device
The function of pump trip pressure release when there is pressure overload.
As shown in Figure 1, also include that kill manifold 9 and choke manifold 15 and at least one heavily starch going out of tank 4, heavily slurry tank 4
It is fixedly connected with pipeline 8 37 between mouth and drilling pump group 7, is fixedly connected with between the entrance and pipeline 4 33 of kill manifold 9
Pipeline 9 38, the outlet of kill manifold 9 is fixedly connected on the casing string 16 on down hole sleeve valve 3 top, entering of choke manifold 15
Mouth is connected by pipeline 10 is fixing with the casing string 16 on down hole sleeve valve 3 top, and the outlet of choke manifold 15 is fixedly connected with
Relief line 17, blowout prevention pipeline 17 is fixedly connected with overfall pipeline 40, and the outlet of overfall pipeline 40 is fixing with surge tank 23 even
Connect.Here, the effect of kill manifold 9 is when kill-job, and it irrigates weighted mud in well by force, carries out kill-job operation, by specially
Control wellhead back pressure with choke manifold 6, thus realize safe kill-job operation；Now, drilling pump group 7 replaces drilling fluid to fill continuously
Dispensing device implements kill-job operation.
As shown in Figure 1, pipeline 5 34 is high-pressure fire hose；Or/and, between choke manifold 15 and special choke manifold 6
It is fixedly connected with high-pressure fire hose 14.
As shown in Figure 1, ground control unit is manual pressuring pump 27, the outlet of manual pressuring pump 27 and down hole sleeve valve
Pipeline 11 and pipeline 12 it is fixedly connected with between 3 entrances.Here down hole sleeve valve 3 is existing known technology, logical
Cross the relative slip within down hole sleeve valve, it is possible to be respectively communicated with pipeline 11 and pipeline 12.Manual pressuring pump 27 with
Between down hole sleeve valve 3 during connecting pipeline 11, it is possible to open down hole sleeve valve 3 valve plate, it is ensured that during lower brill, drill string can lead to
Cross down hole sleeve valve 3 to enter to shaft bottom down；When manual pressuring pump 27 is with down hole sleeve valve 3 connecting pipeline 12, it is possible to real
Now close down hole sleeve valve 3 valve plate, insulate pit shaft.
As it is shown in figure 1, the using method of above-described embodiment overall process under-balance drilling pressure control device, comprise the following steps:
The first step, before overall process under-balance drilling operation, installs overall process under-balance drilling pressure control device；Down-hole is overlapped
Pipe valve 3 with upper strata casing string 16 down to suitable well depth；
Second step, bores according under routine, when drill bit is close to down hole sleeve valve 3, and the setting swivel control head of well head 2, open
Choke valve 31 on special choke manifold 6, checks the pressure reading of the second Pressure gauge 18, it is ensured that now wellhead back pressure is equal to pressure
Wellhead back pressure during trip-out, makes shaft bottom be in metastable under-balanced state in going down process all the time；Check down hole sleeve valve 3
Lower end the most with pressure, when down hole sleeve valve 3 lower end does not has with pressure, then enter the 3rd step；When down hole sleeve valve 3 lower end is with pressure
Time, then enter the 4th step；
3rd step, opens down hole sleeve valve 3 by ground control unit, and now drill string held tightly by the glue core of swivel control head 2
But well head is the most with pressure, the choke valve 31 on the special choke manifold of standard-sized sheet 6, implement normal tripping operation, pass through flow monitoring simultaneously
The row of meter 11 monitoring pit shaft drilling fluid in real time, for amount, enters the 5th step afterwards；
4th step, injects drilling fluid by drilling fluid continuous pouring device to pit shaft and builds the pressure, and ancillary terrestrial controls device and beats
Open down hole sleeve valve 3；The glue core of now well mouth rotary control 2 holds drill string and well head band back pressure tightly, if wellhead back pressure value is more than
Control back pressure value during trip-out with pressure, i.e. there is trapped pressure；By regulating the open degree of the choke valve 31 on special choke manifold 6
Circulating with choke release trapped pressure, the drilling fluid that circulating with choke is returned out enters after liquid-gas separator 20 processes and enters through pipeline 6 35
Surge tank 23, i.e. enters circulation of drilling fluid processing means；Needed for circulating with choke release trapped pressure, effectively drilling well liquid measure is by boring
Well liquid continuous pouring device supplements, until wellhead back pressure is stable and with pressure pull out of hole control back pressure value equal after can bore under recovering
Operation；Enter the 5th step afterwards；
5th step, when bit location is down to down hole sleeve valve less than 3, the glue core of swivel control head 2 is held drill string tightly and is implemented
Trip-out with pressure；In well, drilling fluid is poured into continuously, to keep the stable hydrostatic column pressure of pit shaft by drilling fluid continuous pouring device
Power；The open degree of the choke valve 31 on the special choke manifold 6 of regulation in real time, controls to enter the drilling well liquid measure of pit shaft to remain constant
Wellhead back pressure；After the drilling fluid that circulating with choke is returned out enters liquid-gas separator 20 process, enter circulation of drilling fluid through pipeline six
Processing means；I.e. trip-out process is by the way of grouting continuously and regulating wellhead back pressure in real time, it is achieved the continuous control of wellbore pressure
System, makes shaft bottom be in metastable under-balanced state in trip-out process；When drill bit rises to down hole sleeve valve more than 3, enter
Enter the 6th step；
6th step, when drill bit rises to down hole sleeve valve more than 3, manually pressuring pump 27 closes down hole sleeve valve 3, it is achieved
Packing pit shaft, now well head is the most with pressure, and detachable swivel control head 2 implements conventional trip-out.
During making a trip, injecting drilling fluid by circulation of drilling fluid processing means in well, real-Time Compensation pit shaft is quiet
Column pressure, to keep the stable liquid column hydrostatic pressure of pit shaft, regulates the open degree of choke valve 19 on special choke manifold 6, controls
Enter drilling well liquid measure in pit shaft to maintain constant wellhead back pressure；It follows that by circulation of drilling fluid processing means and joint
The mating reaction of flow tube remittance 6, it is possible to realize dynamically controlling bottom pressure, thus realize continuous print under-balance drilling operation.
Ground control unit is used for switching down hole sleeve valve 3, need to connect kelly bar turn on pump auxiliary relative to existing band pressure brill
For opening down hole sleeve valve, more simplified by the operation sequence of ground control unit switch down hole sleeve valve 3.
Here, the second Pressure gauge 18 on above-mentioned special choke manifold 6 can monitor wellhead back pressure value, record when i.e. pulling out of hole
The controlling value of wellhead back pressure, makes wellhead back pressure value return with well head when pulling out of hole when lower boring by the size of regulation choke valve 19 flow
Pressure controlling value is equal, reaches dynamically to control the purpose of wellbore pressure.At drill bit drilling process, by regulating special choke manifold 6
On the open degree of choke valve 19, apply rational back pressure at well head, it is achieved dynamically control bottom pressure, thus realize continuous print
Under-balance drilling operation；In going down process, trapped pressure in well, can be there is when down hole sleeve valve 3 is with pressure, can be by regulation
The open degree of the choke valve 19 on special choke manifold 6 makes its circulating with choke, discharges trapped pressure, makes shaft bottom in going down process
All the time metastable under-balanced state it is in.
Above technical characteristic constitutes embodiment of the present utility model, and it has stronger adaptability and implementation result, can
Increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
Claims (10)
1. an overall process under-balance drilling pressure control device, it is characterised in that include wellhead blowout preventor group, swivel control head, down-hole
Casing valve, casing string, circulation of drilling fluid processing means, special choke manifold, drilling pump group, there is detection injection pressure and flow
Drilling fluid continuous pouring device and the ground control unit of down hole sleeve valve can be switched, down hole sleeve valve is fixedly mounted on
On the casing string of layer, linked together by pipeline, at down-hole casing between outlet and the down hole sleeve valve of ground control unit
Casing string top above valve is the most sequentially installed with swivel control head and wellhead blowout preventor group, and drilling fluid fills continuously
The outlet of dispensing device is fixed together by pipeline one with the grouting mouth of swivel control head, drilling fluid continuous pouring device
Entrance is linked together by pipeline two with the outlet of circulation of drilling fluid processing means, is installed with ball-and-seat on pipeline one
And switch valve, between the import of pipeline two and drilling pump group, it is fixedly connected with pipeline three, in outlet and the rotation of drilling pump group
Control to be fixedly connected with pipeline four, between the bypass flange and special choke manifold of swivel control head between the top inlet of head
It is fixed together by pipeline five, special choke manifold is installed with exhaust line, fixing on exhaust line
Being provided with liquid-gas separator, liquid-gas separator is fixedly installed togather by pipeline six with circulation of drilling fluid processing means.
Overall process under-balance drilling pressure control device the most according to claim 1, it is characterised in that circulation of drilling fluid processes dress
Put and include surge tank and at least one circulating tank, the outlet of pipeline six is fixedly connected with surge tank, surge tank and circulating tank
Being fixed together by pipeline seven, circulating tank is fixed together with pipeline two；It is provided with vibration in described surge tank
Sieve and deaerator, be connected between two adjacent circulating tanks and be all installed with desander in each circulating tank.
Overall process under-balance drilling pressure control device the most according to claim 1 and 2, it is characterised in that drilling fluid continuous pouring
Device includes the import of drilling fluid charge pump, the first Pressure gauge and flow monitoring meter, the outlet of pipeline two and drilling fluid charge pump
Being connected, drilling well perfusion delivery side of pump is connected with the import of pipeline one, and the first Pressure gauge and flow monitoring meter all fixedly mount
Exit at drilling fluid charge pump.
Overall process under-balance drilling pressure control device the most according to claim 1 and 2, it is characterised in that also include kill manifold
Heavily starch tank with choke manifold with at least one, heavily starch and between the outlet of tank and drilling pump group, be fixedly connected with pipeline eight, in kill-job
Being fixedly connected with pipeline nine between entrance and the pipeline four of manifold, the outlet of kill manifold is fixedly connected on down hole sleeve valve top
Casing string on, the entrance of choke manifold is fixed by the casing string on pipeline ten and down hole sleeve valve top and is connected, choke manifold
Outlet be fixedly connected with relief line, blowout prevention pipeline is fixedly connected with overfall pipeline, the outlet of overfall pipeline and surge tank
Fixing connection.
Overall process under-balance drilling pressure control device the most according to claim 3, it is characterised in that also include kill manifold and
Choke manifold heavily starches tank with at least one, heavily starches and is fixedly connected with pipeline eight between the outlet of tank and drilling pump group, at kill-job pipe
Being fixedly connected with pipeline nine between on the entrance converged and pipeline four, the outlet of kill manifold is fixedly connected on down hole sleeve valve top
Casing string on, the entrance of choke manifold is fixed by the casing string on pipeline ten and down hole sleeve valve top and is connected, choke manifold
Outlet be fixedly connected with relief line, blowout prevention pipeline is fixedly connected with overfall pipeline, the outlet of overfall pipeline and surge tank
Fixing connection.
6. according to the overall process under-balance drilling pressure control device described in claim 1 or 2 or 5, it is characterised in that pipeline five is high
Setting-out tengential belt；Or/and, it is fixedly connected with high-pressure fire hose between choke manifold and special choke manifold.
Overall process under-balance drilling pressure control device the most according to claim 3, it is characterised in that pipeline five is the high pressure fire hose
Band；Or/and, it is fixedly connected with high-pressure fire hose between choke manifold and special choke manifold.
Overall process under-balance drilling pressure control device the most according to claim 4, it is characterised in that pipeline five is the high pressure fire hose
Band；Or/and, it is fixedly connected with high-pressure fire hose between choke manifold and special choke manifold.
Overall process under-balance drilling pressure control device the most according to claim 6, it is characterised in that ground control unit is hands
Dynamic pressuring pump, manually suppresses and is fixedly connected with pipeline 11 and pipeline 12 between delivery side of pump and down-hole casing valve inlet.
10. according to the overall process under-balance drilling pressure control device described in claim 7 or 8, it is characterised in that ground control unit
For manual pressuring pump, manually suppress and between delivery side of pump and down-hole casing valve inlet, be fixedly connected with pipeline 11 and pipeline ten
Two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620674281.3U CN205876243U (en) | 2016-06-30 | 2016-06-30 | Overall process under balance pressure drilling accuse pressure equipment is put |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620674281.3U CN205876243U (en) | 2016-06-30 | 2016-06-30 | Overall process under balance pressure drilling accuse pressure equipment is put |
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| CN205876243U true CN205876243U (en) | 2017-01-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971536A (en) * | 2016-06-30 | 2016-09-28 | 中国石油集团西部钻探工程有限公司 | Pressure control device for whole-process underbalanced drilling and use method |
| CN109458163A (en) * | 2018-12-27 | 2019-03-12 | 中国石油集团西部钻探工程有限公司 | Underbalance high-pressure gas injection pressure release manifold apparatus |
| CN111997597A (en) * | 2020-09-03 | 2020-11-27 | 中国石油天然气集团有限公司 | Method for controlling methane in stratum to invade shaft |
-
2016
- 2016-06-30 CN CN201620674281.3U patent/CN205876243U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971536A (en) * | 2016-06-30 | 2016-09-28 | 中国石油集团西部钻探工程有限公司 | Pressure control device for whole-process underbalanced drilling and use method |
| CN109458163A (en) * | 2018-12-27 | 2019-03-12 | 中国石油集团西部钻探工程有限公司 | Underbalance high-pressure gas injection pressure release manifold apparatus |
| CN111997597A (en) * | 2020-09-03 | 2020-11-27 | 中国石油天然气集团有限公司 | Method for controlling methane in stratum to invade shaft |
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Effective date of registration: 20201112 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |