CN108952672A - Midway testing tubular column of immobile drilling tool and use method - Google Patents
Midway testing tubular column of immobile drilling tool and use method Download PDFInfo
- Publication number
- CN108952672A CN108952672A CN201710351968.2A CN201710351968A CN108952672A CN 108952672 A CN108952672 A CN 108952672A CN 201710351968 A CN201710351968 A CN 201710351968A CN 108952672 A CN108952672 A CN 108952672A
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- Prior art keywords
- drilling
- drilling rod
- motionless
- tubing string
- sliding sleeve
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- 238000005553 drilling Methods 0.000 title claims abstract description 215
- 238000012360 testing method Methods 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 31
- 230000001681 protective effect Effects 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 5
- 238000005406 washing Methods 0.000 abstract 1
- 238000005070 sampling Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Geophysics (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a midway testing tubular column of an immobile drilling tool and a using method thereof, wherein the midway testing tubular column of the immobile drilling tool comprises a drilling rod, a kelly bar, a drilling bit, a sliding sleeve, a check valve and a testing tree, wherein the drilling rod comprises an upper part and a lower part; the test tree is suitable for being connected with the upper end of the drill rod; the check valve is arranged on the inner wall of the drill rod close to the lower end; when the drill rod is positioned in the oil-gas well and the sliding sleeve is opened, the annular space between the technical casing pipe of the oil-gas well and the drill rod is communicated with the cavity of the drill rod; when the sliding sleeve is closed, the annular space between the technical casing and the drill rod is not communicated with the cavity of the drill rod. The invention can complete the midway test without taking out the drilling pipe column, washing and killing the well and putting in the test pipe column, thereby reducing the operation time and the pollution of the drilling fluid to the open hole reservoir.
Description
Technical field
The present invention relates to oil-gas mining technical field, in particular to the drillstem test tubing string and application method of motionless drilling tool.
Background technique
Before oil-gas mining, oil test operation need to be carried out.Oil test operation can be divided into two classes: complete well formation testing and drillstem test.
Drillstem test is in the normal drilling process of oil/gas well, according to oil/gas show degree, in order to timely and accurately make to oil-gas Layer
Normal drilling is interrupted in evaluation, and test layer carries out survey pressure, asks production, sampling, and the temporary complete well for carrying out primary evaluation oil-gas Layer is surveyed
Examination.
Existing drillstem test technology needs kill-job, pulls out of hole and descends test string into well to complete test assignment, i.e., first
From in well out by well drilling pipe column, well-flushing is carried out, tripping in test string again after kill-job operation.
In the implementation of the present invention, the inventors discovered that in the prior art the prior art has at least the following problems:
Existing drillstem test technology process is more, and the activity duration is long, and efficiency is lower, and cause naked eye reservoir for a long time by
Mud soak leads to the pollution for having formed naked eye reservoir before testing.
Summary of the invention
In view of this, the present invention provides the drillstem test tubing string and application method of a kind of motionless drilling tool, when can reduce operation
Between and pollution of the drilling fluid to naked eye reservoir.
Specifically, including technical solution below:
On the one hand, the present invention provides a kind of drillstem test tubing strings of motionless drilling tool, including drilling rod, kelly bar, drill bit, cunning
Set, check-valves and testing tree, wherein
The drilling rod includes upper and bottom section, and the sliding sleeve is connected to the upper part of the drilling rod and it is divided in lower part
Between, the upper end of the upper part of the drilling rod is connect with the kelly bar or the testing tree, the lower end of the lower part of the drilling rod
It is connect with the drill bit；The testing tree is suitable for connecting with the upper end of the drilling rod；The check-valves is arranged in the drilling rod
The position of the close lower end of wall；
When the drilling rod is located in oil/gas well, the sliding sleeve is opened, between the protective casing of oil/gas well and the drilling rod
Annular space be connected to the cavity of the drilling rod；Close the sliding sleeve, the annular between the protective casing and the drilling rod
Space is not connected to the cavity of the drilling rod.
Selectively, the drillstem test tubing string of the motionless drilling tool of motionless drilling tool further includes drilling spool, the drilling well four
It is logical to cover in the outside of the drilling rod.
Selectively, the drillstem test tubing string of the motionless drilling tool of motionless drilling tool further includes double ram type preventer, described double
The lower end of ram preventer is connect with the upper end of the drilling spool.
Selectively, the drillstem test tubing string of the motionless drilling tool of motionless drilling tool further includes annular preventer, the annular
The lower end of preventer is connect with the upper end of the double ram type preventer.
Selectively, lower plug valve is connected between the drilling rod and the kelly bar.
Selectively, the upper end of the kelly bar is connected with plug valve.
Selectively, the sliding sleeve includes outer tube and bushing pipe, and the outer tube is connected to the upper part and lower part of the drilling rod
/, the outer tube is set on the bushing pipe, the outer tube and the bushing pipe slidable connection, is provided on the outer tube
Aperture, when the bushing pipe is far from the aperture, the sliding sleeve is opened.
Selectively, the drillstem test tubing string of the motionless drilling tool of motionless drilling tool further includes packer, and the packer connects
It connects between the upper part and the sliding sleeve of the drilling rod, the lower part of the drilling rod is on the inner wall on the top of the check-valves
It is provided with ball seat.
Second aspect, the present invention are supplied to a kind of drillstem test tubing string of motionless drilling tool provided using first aspect
Method, which comprises
Step 1: when needing to carry out drillstem test, stop the rotation of the drill bit, open the sliding sleeve；
Step 2: removing the kelly bar, and the testing tree is connected to the upper end of the drilling rod；
Step 3: to the annular space injected clear water or nitrogen between the drilling rod and the protective casing, so that institute
It states clear water or nitrogen drives the drilling fluid in the drilling rod to be discharged, so that oil gas flows into the cavity of the drilling rod and from described
Testing tree discharge.
The third aspect, the present invention are supplied to the drillstem test tubing string of another motionless drilling tool provided using first aspect
Method, which comprises
Step 1: when needing to carry out drillstem test, stopping the rotation of the drill bit, into the drilling rod put into steel ball or
Solvable ball is stuck in the steel ball or solvable ball on the ball seat, suppresses to the drilling rod, makes the packer setting；Continue
The drilling rod is suppressed, the steel ball or solvable ball is made to move to the check-valves upper end；
Step 2: the sliding sleeve is opened；
Step 3: removing the kelly bar, and the testing tree is connected to the upper end of the drilling rod；
Step 4: the tripping in coiled tubing in the drilling rod, injected clear water or nitrogen into the coiled tubing, so that
The clear water or nitrogen flowed out from the coiled tubing lower end drives the annular space between the drilling rod and the coiled tubing
Interior drilling fluid discharge, and then oil gas is flowed into the annular space between the drilling rod and the coiled tubing and is arranged from the testing tree
Out.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
The present invention provides a kind of drillstem test tubing string of motionless drilling tool and application method, the drillstem test pipes of motionless drilling tool
Column includes drilling rod, kelly bar, drill bit, sliding sleeve, check-valves and testing tree, when detecting the annular between protective casing and drilling rod
When having oil gas in the drilling fluid of space discharge, sliding sleeve is opened, kelly bar is removed and testing tree is mounted on drilling rod, to technology set
It manages and injected clear water in the annular space between drilling rod perhaps nitrogen and the sky that makes clear water or nitrogen that oil gas be driven to enter sliding sleeve
It is intracavitary, and then the cavity through drilling rod is discharged from the leakage fluid dram of testing tree.The present invention be not required to from well out well drilling pipe column, wash
Drillstem test can be completed in well kill-job operation and tripping in test string, the activity duration is reduced, so as to shorten naked eye reservoir by drilling well
The time that liquid impregnates reduces pollution of the drilling fluid to naked eye reservoir.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is in one embodiment of the invention without drillstem test tubing string the showing in oil/gas well of the motionless drilling tool of packer
It is intended to；
Fig. 2 is signal of the drillstem test tubing string of the motionless drilling tool with packer in one embodiment of the invention in oil/gas well
Figure；
Fig. 3 is the main view of testing tree in one embodiment of the invention；
Fig. 4 is the side view of testing tree in one embodiment of the invention.
Appended drawing reference in figure is respectively as follows:
1, upper plug valve；2, kelly bar；3, lower plug valve；4, annular preventer；5, double ram type preventer；6, drilling well four
It is logical；7, surface pipe；8, drilling rod；9, protective casing；10, sliding sleeve；11, packer；12, check-valves；13, drill bit；14, it is promoted short
Section；15, control blowout manifold；16, kill manifold；17, suction valve；18, flutter valve is flowed；19, kill-job flutter valve；20, main valve；21, it rotates
Pipe nipple.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.
Embodiment one
The drillstem test tubing string for present embodiments providing a kind of motionless drilling tool, such as Fig. 1 and as indicated with 2, including drilling rod 8, side
Drilling rod 2, drill bit 13, sliding sleeve 10 and testing tree, wherein drilling rod 8 includes upper and bottom section, and sliding sleeve 10 is connected to drilling rod 8
Between upper part and lower part point, the upper end of the upper part of drilling rod 8 is connect with kelly bar 2 or testing tree, under the lower part of drilling rod 8
End is connect with drill bit 13；Drilling rod 8 is being provided with check-valves 12 at lower end；When drilling rod 8 is located in oil/gas well, sliding sleeve 10 is opened
When, the annular space between protective casing 9 and drilling rod 8 is connected to the cavity of drilling rod 8；When sliding sleeve 10 is closed, protective casing 9 and brill
Annular space between bar 8 is not connected to the cavity of drilling rod 8.
Using the drillstem test tubing string of motionless drilling tool provided in this embodiment, in drilling well, kelly bar 2 is connected to drilling rod
Sliding sleeve 10 is opened, kelly bar 2 is removed and testing tree is mounted on drilling rod when carrying out drillstem test sampling in the upper end of part on 8
On 8, into the annular space between protective casing 9 and drilling rod 8 injected clear water perhaps nitrogen and so that clear water or nitrogen is entered brill
The drilling fluid in drilling rod 8 is driven to be discharged in the cavity of bar 8, and then oil gas enters the cavity of drilling rod 8 and is discharged from testing tree.This reality
The drillstem test tubing string for applying the motionless drilling tool of example offer is not required to from well well drilling pipe column, progress well-flushing kill-job operation and tripping in out
Drillstem test can be realized in test string, reduces the activity duration, so as to shorten naked eye reservoir by the time of mud soak, reduces
Pollution of the drilling fluid to naked eye reservoir.
It in the present embodiment, is naked eye reservoir around 9 or less protective casing, drill bit 13, in drilling well and drillstem test mistake
Cheng Zhong, naked eye reservoir are directly contacted with drilling fluid.Therefore using the drillstem test tubing string institute of motionless drilling tool provided in this embodiment
Activity duration is shorter, and naked eye reservoir is short by the time of mud soak, so as to reduce dirt of the drilling fluid to naked eye reservoir
Dye.
In the present embodiment, as shown in Figure 3 and Figure 4, testing tree includes lifting sub 14, control blowout manifold 15, kill manifold
16, suction valve 17, flowing flutter valve 18, kill-job flutter valve 19, main valve 20 and rotating short-knot 21.Wherein, lifting sub 14 will be for that will survey
Examination tree is hanging on external equipment；Control blowout manifold 15 is used for open flow downhole well fluid；Kill manifold 16 is for recycling well killing fluid；It takes out
It inhales valve 17 and is used for the tripping in wireline tool into pit shaft；Flowing flutter valve 18 is hydraulic control fault-free normal close valve, is pressurizeed by control panel
It opens, in emergency circumstances the quick closing well of pressure release；The underway way of kill-job flutter valve 19 is connected when testing with pump truck, in emergency circumstances uses
Ground installation pressure testing is used for before kill-job, test；Main valve 20 is for being isolated oil well and ground flow；Rotating short-knot 21 is used to rotate
Lower part tubing string, such as set packer.In the present embodiment, oil gas can be discharged by control blowout manifold 15.
As an improvement of this embodiment, as depicted in figs. 1 and 2, the drillstem test tubing string of motionless drilling tool further includes boring
Well four-way 6,6 sets of drilling spool outside drilling rod 8, lower end is connect with the upper end of protective casing 9 and surface pipe 7.In this way, boring
The drilling fluid flowed out out of protective casing 9 and drilling rod 8 annular space during well can be by the opening of the side of drilling spool 6
Outflow.
As an improvement of this embodiment, as depicted in figs. 1 and 2, the drillstem test tubing string of the motionless drilling tool of motionless drilling tool
It further include double ram type preventer 5, the lower end of double ram type preventer 5 is connect with the upper end of drilling spool 6.In drilling well and drillstem test
In the process, double ram type preventer 5 is in close state, and the annular space between drilling spool 6 and drilling rod 8 is blocked, prevents from sending out
Raw overflow, well kick.
As an improvement of this embodiment, as depicted in figs. 1 and 2, the drillstem test tubing string of motionless drilling tool further includes ring
The lower end of shape preventer 4, annular preventer 4 is connect with the upper end of double ram type preventer 5.During drilling well and drillstem test,
Annular preventer 4 is in close state, it is ensured that operation process is safer.
As an improvement of this embodiment, as depicted in figs. 1 and 2, lower cock is connected between drilling rod 8 and kelly bar 2
Valve 3.The both ends of lower plug valve 3 can be attached by screw thread and drilling rod 8 and kelly bar 2.It is taken in drilling well and drillstem test oil gas
During sample, lower plug valve 3 is in the open state.Remove kelly bar 2, installation testing tree and complete oil gas sampling when, will under
Plug valve 3 is closed, to realize closing well, avoids that overflow, well kick occurs.
As an improvement of this embodiment, as depicted in figs. 1 and 2, the upper end of kelly bar 2 is connected with plug valve 1.?
In drilling well and drillstem test oil gas sampling process, upper plug valve 1 is in the open state.When overflow, well kick occurs, can close
Plug valve 1 prevents formation fluid from spraying along drilling rod 8 and drill with ferrule head 2.In well control operation, when rotary hose, the height being connect with drilling tool
When pressure pipe remittance damage, plug valve 1 in closing can be safely changed or be repaired.
As an improvement of this embodiment, sliding sleeve 10 include outer tube and bushing pipe, outer tube be connected to drilling rod 8 upper part and
Between lower part point, outer tube is arranged on bushing pipe, outer tube and bushing pipe slidable connection, aperture is provided on outer tube, when bushing pipe is far from institute
When aperture, sliding sleeve 10 is opened.When needing to open sliding sleeve 10, fishing head is lowered into drilling rod 8 by wirerope, makes fishing head
It is stuck in bushing pipe, pulls up wirerope, make fishing head that bushing pipe be driven to move upwards simultaneously far from the aperture on outer tube, thus technology set
Annular space between pipe 9 and drilling rod 8 is connected to by the aperture on outer tube with the cavity of sliding sleeve 10, then by wirerope and salvaging
Head takes out.
As an improvement of this embodiment, as shown in Fig. 2, the drillstem test tubing string of motionless drilling tool further includes packer
11, packer 11 is connected between the upper part of drilling rod 8 and sliding sleeve 10, is provided with ball seat on the inner wall of the lower part of drilling rod.It is right
In high pressure, high yield and the oil/gas well for needing protection technique casing, carry out that the testing tube with packer can be used when drillstem test
Column.Steel ball is put into drilling rod 8, is stuck in steel ball on ball seat, drilling rod 8 is suppressed, expands the packing element of packer 10, completes to sit
Annular space between protective casing 9 and drilling rod 8 is blocked, the liquid in well is thus prevented to spray out of annular space by envelope.
As depicted in figs. 1 and 2, in drilling well and progress drillstem test, upper plug valve 1, kelly bar 2, lower plug valve 3, ring
Shape preventer 4, double ram type preventer 5 and drilling spool 6 are rest on the ground, surface pipe 7, drilling rod 8, protective casing 9, sliding sleeve
10, packer 11, check-valves 12 and drill bit 13 are located at subsurface.
Embodiment two
A kind of drillstem test tubing string of motionless drilling tool shown in FIG. 1 provided using embodiment one is be provided
Method, this method comprises:
Step 1: when needing to carry out drillstem test, stop the rotation of drill bit, open sliding sleeve；
Specifically, when detect between drilling rod and protective casing annular space discharge drilling fluid in have oil gas when or
When person rule of thumb judges to need to carry out drillstem test, into drilling rod, tripping in is connected with the steel wire of fishing head, and makes fishing head
It being stuck in the bushing pipe of sliding sleeve, pulls up wirerope, the bushing pipe for making fishing head drive sliding sleeve moves upwards, so that sliding sleeve is opened,
The cavity of sliding sleeve is connected to by the aperture on outer tube with the annular space between protective casing and drilling rod.
Step 2: kelly bar is removed, testing tree is connected to the upper end of drilling rod；
In the present embodiment, testing tree can be connected to the upper end of drilling rod by lower plug valve.
Step 3: to the annular space injected clear water between drilling rod and protective casing perhaps nitrogen so that clear water or nitrogen
Gas drive makes the cavity of the discharge drilling rod of the drilling fluid in drilling rod, so that oil gas flows into the cavity of drilling rod and the control blowout manifold from testing tree
Discharge.
After completing oil gas sampling, lower plug valve is closed to realize closing well.
It is not required to when underway way is tested using the method for the drillstem test tubing string of motionless drilling tool provided in this embodiment
The well drilling pipe column tripping in test string again out from well, drillstem test, which can be completed, can be completed oil gas sampling, when reducing operation
Between, shorten naked eye reservoir in the soaking time of drilling fluid, reduces drilling fluid to the pollution level of naked eye reservoir.
Embodiment three
The side of the drillstem test tubing string of the motionless drilling tool as shown in Figure 2 provided using embodiment one is be provided
Method, this method comprises:
Step 1: when needing to carry out drillstem test, stopping the rotation of drill bit, and steel ball or solvable ball are put into drilling rod,
It is stuck in steel ball or solvable ball on ball seat, drilling rod is suppressed, packer setting is made；Continue to suppress drilling rod, makes steel ball or solvable
Ball moves to check-valves upper end；
There is oil gas or according to warp when detecting in the drilling fluid that the annular space between drilling rod and protective casing is discharged
It tests when judging to need to carry out drillstem test, stops boring and start to test.
Step 2: sliding sleeve is opened；
Specifically, into drilling rod, tripping in is connected with the steel wire of fishing head, and is stuck in fishing head in the bushing pipe of sliding sleeve, upwards
Wirerope is pulled, the bushing pipe for making fishing head drive sliding sleeve moves upwards, so that sliding sleeve is opened, the cavity of sliding sleeve passes through on outer tube
Annular space between aperture and protective casing and drilling rod is connected to.
Step 3: kelly bar is removed, testing tree is connected to the upper end of drilling rod；
In the present embodiment, testing tree can be connected to the upper end of drilling rod by lower plug valve.
Step 4: the tripping in coiled tubing in drilling rod, injected clear water or nitrogen into coiled tubing, so that from continuous oil
The clear water or nitrogen of pipe lower end outflow drive the drilling fluid in the annular space between drilling rod and coiled tubing to be discharged, and then oil
Gas is flowed into the annular space between drilling rod and coiled tubing and is discharged from testing tree.
When completing oil gas sampling, lower plug valve is closed, to realize closing well.
The method of the drillstem test tubing string of motionless drilling tool provided in this embodiment can be used for high pressure, high yield and need to protect
The oil/gas well of protective casing prevents overflow and well kick, and when the test of underway way, is not required to from well well casing out
Column tripping in test string again can be completed oil gas sampling, reduce the activity duration, shorten naked eye reservoir in the immersion of drilling fluid
Between, drilling fluid is reduced to the pollution level of naked eye reservoir.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of drillstem test tubing string of motionless drilling tool, which is characterized in that including drilling rod, kelly bar, drill bit, sliding sleeve, check-valves
And testing tree, wherein
The drilling rod includes upper and bottom section, and the sliding sleeve is connected between the upper part and lower part point of the drilling rod, institute
The upper end for stating the upper part of drilling rod is connect with the kelly bar or the testing tree, the lower end of the lower part of the drilling rod with it is described
Drill bit connection；The testing tree is suitable for connecting with the upper end of the drilling rod；Leaning on for the drilling rod inner wall is arranged in the check-valves
The position of nearly lower end；
When the drilling rod is located in oil/gas well, the sliding sleeve, the ring between the protective casing of oil/gas well and the drilling rod are opened
Shape space is connected to the cavity of the drilling rod；Close the sliding sleeve, the annular space between the protective casing and the drilling rod
It is not connected to the cavity of the drilling rod.
2. the drillstem test tubing string of motionless drilling tool according to claim 1, which is characterized in that the motionless motionless brill of drilling tool
The drillstem test tubing string of tool further includes drilling spool, and the drilling spool is covered in the outside of the drilling rod.
3. the drillstem test tubing string of motionless drilling tool according to claim 2, which is characterized in that the motionless motionless brill of drilling tool
The drillstem test tubing string of tool further includes double ram type preventer, the upper end of the lower end of the double ram type preventer and the drilling spool
Connection.
4. the drillstem test tubing string of motionless drilling tool according to claim 3, which is characterized in that the motionless motionless brill of drilling tool
The drillstem test tubing string of tool further includes annular preventer, the upper end of the lower end of the annular preventer and the double ram type preventer
Connection.
5. the drillstem test tubing string of motionless drilling tool according to claim 1, which is characterized in that the drilling rod and the drill with ferrule
Lower plug valve is connected between bar.
6. the drillstem test tubing string of the motionless drilling tool of motionless drilling tool according to claim 1, which is characterized in that the kelly bar
Upper end be connected with plug valve.
7. the drillstem test tubing string of motionless drilling tool according to claim 1, which is characterized in that the sliding sleeve include outer tube and
Bushing pipe, the outer tube are connected between the upper and bottom section of the drilling rod, and the outer tube is set on the bushing pipe, described
Outer tube and the bushing pipe slidable connection are provided with aperture on the outer tube, when the bushing pipe is far from the aperture, the cunning
Set is opened.
8. the drillstem test tubing string of motionless drilling tool described in -7 any items according to claim 1, which is characterized in that it is described not
The drillstem test tubing string of the dynamic motionless drilling tool of drilling tool further includes packer, and the packer is connected to upper part and the institute of the drilling rod
It states between sliding sleeve, the lower part of the drilling rod is provided with ball seat on the inner wall on the top of the check-valves.
9. a kind of method of the drillstem test tubing string using motionless drilling tool described in any item of claim 1-7, feature
It is, which comprises
Step 1: when needing to carry out drillstem test, stop the rotation of the drill bit, open the sliding sleeve；
Step 2: removing the kelly bar, and the testing tree is connected to the upper end of the drilling rod；
Step 3: to the annular space injected clear water or nitrogen between the drilling rod and the protective casing, so that described clear
Water or nitrogen drive the drilling fluid in the drilling rod to be discharged, so that oil gas flows into the cavity of the drilling rod and from the test
Tree discharge.
10. a kind of method of the drillstem test tubing string using motionless drilling tool according to any one of claims 8, which is characterized in that the side
Method includes:
Step 1: when needing to carry out drillstem test, stopping the rotation of the drill bit, and steel ball or solvable is put into the drilling rod
Ball is stuck in the steel ball or solvable ball on the ball seat, suppresses to the drilling rod, makes the packer setting；Continue to institute
It states drilling rod to suppress, the steel ball or solvable ball is made to move to the check-valves upper end；
Step 2: the sliding sleeve is opened；
Step 3: removing the kelly bar, and the testing tree is connected to the upper end of the drilling rod；
Step 4: the tripping in coiled tubing in the drilling rod, injected clear water or nitrogen into the coiled tubing, so that from institute
The clear water or nitrogen for stating the outflow of coiled tubing lower end drive in the annular space between the drilling rod and the coiled tubing
Drilling fluid discharge, and then oil gas is flowed into the annular space between the drilling rod and the coiled tubing and is discharged from the testing tree.
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| CN112855134A (en) * | 2019-11-27 | 2021-05-28 | 中国石油天然气股份有限公司 | Midway testing device and method for immobile drilling tool |
| CN112855134B (en) * | 2019-11-27 | 2024-03-26 | 中国石油天然气股份有限公司 | Midway test device and test method for stationary drilling tool |
| CN113311140A (en) * | 2020-02-26 | 2021-08-27 | 中国石油天然气股份有限公司 | Hydrocarbon reservoir testing system and method |
| CN113311140B (en) * | 2020-02-26 | 2024-03-01 | 中国石油天然气股份有限公司 | Hydrocarbon reservoir testing system and hydrocarbon reservoir testing method |
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