CN110388190A - A kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery - Google Patents
A kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery Download PDFInfo
- Publication number
- CN110388190A CN110388190A CN201910743279.5A CN201910743279A CN110388190A CN 110388190 A CN110388190 A CN 110388190A CN 201910743279 A CN201910743279 A CN 201910743279A CN 110388190 A CN110388190 A CN 110388190A
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- temperature
- superhigh
- drill
- pressure
- centralizer
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- 238000005553 drilling Methods 0.000 title claims abstract description 47
- 210000002445 nipple Anatomy 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 239000010432 diamond Substances 0.000 claims abstract description 10
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000008014 freezing Effects 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 241000410367 Clerodendrum thomsoniae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012546 transfer 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
-
- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/10—Formed core retaining or severing means
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)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery, it includes from bottom to top, pass sequentially through screw thread composite polycrystal-diamond core bit interconnected, first centralizer, high temperature and pressure core barrel, second centralizer, high temperature float valve, first drill collar, leak stopping pipe nipple, second drill collar, bumper jar, heavy weight drill pipe, drop-in check valve seated connection head, heavy weight drill pipe and common drilling rod, it is superhigh temperature resistant metalwork, temperature resistance ability is more than 200 DEG C, first drill collar is equipped with 1, second drill collar is equipped with 6 and respectively successively axial interconnection.The present invention can reduce superhigh-temperature and-pressure well coring well control risk, realize the safe coring of superhigh-temperature and-pressure well.
Description
Technical field
The present invention relates to prospect pit drilling technology field, in particular to a kind of brills suitable for superhigh-temperature and-pressure well drilling and coring delivery
Tool combination.
Background technique
Yingqiong basin is one of big high temperature and pressure area in the world three, and petroleum resources are abundant, but difficulties in exploration is very big, in recent years warbler
The superhigh-temperature and-pressure prospect pit of fine jade basin is found that the following superhigh-temperature and-pressure drilling and coring delivery is also brought into schedule.Drilling well takes
The heart pair and the formulation of gas field Reserves Assessment and gas field development program are of great significance.But Present Global rarely has superhigh-temperature and-pressure
The case of success coring, domestic superhigh-temperature and-pressure well drilling and coring delivery is also in technological gap.This is mainly due to superhigh-temperature and-pressure well
Safe pressure window narrows are easy to happen complex situations such as leakage, bit freezing etc., drilling and coring delivery operation well control risk pole during coring
Height, furthermore current coring tool temperature resistance ability does not reach requirement.
Conventional core drill combination only has the combination such as simple coring tool, centralizer and heavy weight drill pipe, and coring tool is anti-
Superhigh temperature requirement is not achieved in warm ability, is unable to satisfy superhigh-temperature and-pressure well drilling and coring delivery well control requirement, and conventional core drill
The ability of the complex situations such as leakage, bit freezing is not coped with.To carry out superhigh-temperature and-pressure drilling and coring delivery, needs to invent one kind and be suitable for
The drill assembly of superhigh-temperature and-pressure well drilling and coring delivery reduces well control risk, while improving the anti-sticking ability of leakproof.
Summary of the invention
The present invention provides a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery, reduces superhigh-temperature and-pressure well and takes
Heart well control risk realizes the safe coring of superhigh-temperature and-pressure well.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that:
A kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery comprising from bottom to top, pass sequentially through screw thread
Composite polycrystal-diamond core bit interconnected, the first centralizer, high temperature and pressure core barrel, the second centralizer, high temperature
Float valve, the first drill collar, leak stopping pipe nipple, the second drill collar, bumper jar, heavy weight drill pipe, drop-in check valve seated connection head, heavy weight drill pipe and
Common drilling rod is superhigh temperature resistant metalwork, and temperature resistance ability is more than 200 DEG C, and first drill collar is equipped with 1, the second drill collar
Equipped with 6 and difference is successively axially connected with each other.
The outer diameter of the composite polycrystal-diamond core bit is 212.7mm, the outer diameter of the first centralizer is
177.8mm, the second centralizer outer diameter be 177.8mm, the first drill collar is outer diameter 203.2mm, the outer diameter of the second drill collar is
203.2mm, bumper jar outer diameter be 203.2mm.
The high temperature and pressure core barrel, which uses, exempts from pitching structure.
The high temperature float valve is interior jet-preventing tool.
The high temperature and pressure core barrel is equipped with outer cylinder and inner cylinder, and outer cylinder is set with inner cylinder, the annular clearance between inside and outside cylinder
Distance is 7.5mm.
The high temperature and pressure core barrel uses steel inner cylinder, and temperature resistance ability is more than 200 DEG C.
The outer diameter of first righting strip is 178mm.
The high temperature float valve is float valve fuse, and temperature resistance ability is more than 200 DEG C.
Distance is more than 10m between first centralizer and the second centralizer.
The beneficial effects of the present invention are: realizing superhigh-temperature and-pressure drilling and coring delivery, the complexity such as leakage, bit freezing can be effectively prevent
The generation of accident significantly reduces well control risk.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
In figure: 1 composite polycrystal-diamond core bit, 2 first centralizers, 3 high temperature and pressure core barrels, 4 high temperature float valves,
5 first drill collars, 6 leak stopping pipe nipples, 7 bumper jars, 8 heavy weight drill pipes, 9 drop-in check valve seated connection heads, 10 heavy weight drill pipes, 11 common brills
Bar, 12 second centralizers, 13 second drill collars.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery, the drilling well suitable for target zone
Coring operation comprising from bottom to top, pass sequentially through screw thread composite polycrystal-diamond core bit 1, first interconnected
Centralizer 2, high temperature and pressure core barrel 3, the second centralizer 12, high temperature float valve 4, the first drill collar 5, leak stopping pipe nipple 6, the second drill collar
13, bumper jar 7, heavy weight drill pipe 8, drop-in check valve seated connection head 9, heavy weight drill pipe 10 and common drilling rod 11, are superhigh temperature resistant
Metalwork, temperature resistance ability are more than 200 DEG C, and first drill collar 5 is equipped with 1, and the second drill collar 13 is equipped with 6 and distinguishes successively axis
To interconnection.
The outer diameter of the composite polycrystal-diamond core bit 1 is 212.7mm, the outer diameter of the first centralizer 2 is
177.8mm, the second centralizer 12 outer diameter be 177.8mm, the outer diameter that the first drill collar 5 is outer diameter 203.2mm, the second drill collar 13
Outer diameter for 203.2mm, bumper jar 7 is 203.2mm.
The high temperature and pressure core barrel 3 avoids the generation spark in high-temperature stratum pitching from causing using pitching structure is exempted from
Down hole problem.
The high temperature float valve 4 is interior jet-preventing tool, can reduce well control risk, while can also add in drill assembly
Other interior jet-preventing tools except high temperature float valve 4 reduce well control risk.
The high temperature and pressure core barrel 3 is equipped with outer cylinder and inner cylinder, and outer cylinder is set with inner cylinder, the annular space between inside and outside cylinder
When stand-off distance is from complex situations occur for 7.5mm, in coring operation, can effectively avoid causes to suppress pump or drilling well because annular clearance is too small
The complex situations such as liquid charging is limited.
The high temperature and pressure core barrel 3 uses steel inner cylinder, and temperature resistance ability is more than 200 DEG C.
The outer diameter of first righting strip 2 is 178mm, for replacing the spiral centering device of traditional outer diameter 210mm, thus
Effectively reduce the risk of bit freezing during coring operation.
The high temperature float valve 4 is that float valve fuse temperature resistance ability is more than 200 DEG C.
Distance is more than 10m between first centralizer 2 and the second centralizer 12, can effectively reduce the cross of core drill
To vibration, prevent from blocking up the complex situations such as heart bit freezing caused by the broken heart.
Working principle:
The present invention in application, by using leak stopping pipe nipple 6 carry out throw kick off, closes ball, batching sphere realize switch, kick off, close
Ball, batching sphere must suitably be caught by lower part ball cylinder capture, catch ball cylinder can directly under in this tool in the following, can also be below more
The position of lower section, it is bigger than the outer diameter of ball this requires being had in all drilling tool internal diameters for catching ball cylinder or more.
It throws and kicks off first out of wellhead column, top can be connect after investment of kicking off and drive turn on pump release, during this period if possible
Words, it is proposed that only movable drilling tool, record ball reach total strokes per minute when ball seat, the reference for next pitching.When ball reaches ball seat
Afterwards, can be appreciated that vertical pressure can be risen, at this time should not termination of pumping pressure release, continue to be slowly increased pressure, until reaching pressure of catching
1100psi, pressure stabilizing 30s are in order to which tool interior component having time runs to next position in this way.It is slowly increased to be pumped to and push away
Shear pressure value 1600psi, pressure stabilizing 30s clock are recommended, if can't see pump pressure decline, then pump pressure 500psi is improved, continues 30s, often
Secondary increase will continue 30s, until being observed that pump pressure decline, show that by-pass prot is opened, can establish circulation.It is existing by comparing
The opening state of tool is confirmed in the pump pressure (pump pressure of same displacement before pitching) that pump pressure is recorded with before.At this point, leak stopping
Material can be from by-pass prot direct circulation, can also be from 6 or less drilling tool of leak stopping pipe nipple, such as: flow through the first drill collar 5, high temperature float valve 4,
Circulation in second centralizer 12, high temperature and pressure core barrel 3, the first centralizer 2, composite polycrystal-diamond core bit 1, i.e., from
Core bit circulation outflow.It does not find that plugging material blocks 6 or less drilling tool of leak stopping pipe nipple, batching sphere can be thrown in well head, launched
Before batching sphere, the pressure in drilling tool is checked, if having any sign underbalance or having reflux, by extra plugging material or thick
Plug, which recycles, to be come, and is prevented sundries from being entered in coring pipe string by open by-pass prot, when pumping batching sphere, to be kicked off to make with pumping
With same discharge capacity, batching sphere reaches ball seat, and with same operation of kicking off, 6 or less drilling tool of leak stopping pipe nipple, Zhi Nengtong is thus isolated
Cross leak stopping pipe nipple circulation port carry out circulation be pumped into plugging material.After plugging operations, Guan Qiuhou is thrown in well head again, is closed other
Through-hole restores normal circulation channel, recycles below drill bit.
Can repeatedly pitching, repeatedly switched and be isolated, in this way can in the case where leakage occurs, pitching opening by
Through-hole injects leak stopping slurry into well, while can isolate leak stopping pipe nipple lower part, avoids leak stopping slurry to the erosion of rock core and to work
The influence of tool.
Application example:
Certain extra large superhigh-temperature and-pressure well of the step 1. THE WESTERN SOUTH CHINA SEA songs of the oriole, coring depth 3632m, formation temperature are 187 DEG C, ground
Being laminated force coefficient is 2.1, and pit shaft drilling fluid density is 2.15g/cm when coring3, before lower core drill, static observation pit shaft is needed
Liquid level stabilizing.
Step 2. by using the first centralizer of Ф 212.7mm composite polycrystal-diamond core bit+Ф 177.8mm+
The second centralizer of Ф 171.5mm high temperature and pressure core barrel+Ф 177.8mm+core barrel top connection+cooperation connector (411*630)+height
+ 6 the second drill collars of Ф 203.2mm of+1 Ф 203.2mm the first drill collar+Ф 203.2mm leak stopping pipe nipple of warm float valve (high temperature spool)+
The Ф 203.2mm hydraulic shock device+Ф 139.7mm of cooperation connector (631*520)+1 heavy weight drill pipe+drop-in check valve seated connection head
+ 13 common drilling rods of Ф 139.7mm heavy weight drill pipe+Ф 139.7mm, are successively interconnected and fixed.
When step 3. determines coring bed, accurate recording well depth, tidal range, and to common drilling rod and heavy weight drill pipe drilling rod into
Row is measured；Tool must steadily go up rig floor；Tool enters and leaves well head, must use hook lifting, and use safety slip；Decentralization drilling tool will be put down
Surely；Slacking off must not exceed 3t, under not handy core bit reaming is strong；It is bored in going down process middle sleeve by high temperature and pressure underground
It is required that turn on pump top leads to drilling tool, Open-Hole Section logical and next cylindrical drill bar every 200~300m turn on pump top since casing out；Under get into bottom
Afterwards, the abundant circulating fluid of spudding up and down cleans shaft bottom, surveys aftereffect；Drill bit is controlled apart from bottom hole location in 2m or so；One
Ready rear detecting shaft bottom is cut, and measures drilling tool and lifts from the top and puts down suspending weight.
Step 4. starts pith, 1~2t of bit pressure, 40~60rpm of revolving speed, 1000~1300L/min of discharge capacity；Pith 0.3-
After 0.5m, normal parameter core-drilling, 4~8t of bit pressure, 40~60rpm of revolving speed, 1200~1500L/min of discharge capacity are gradually added to；
Judged according to stratum advance notice with when boring, is preferably selected and cuts the heart on stratum preferable at column and less hard, first ground when cutting the heart
Heart operation crosses and mentions 17t, above mentions drilling tool 5m, transfer to bottom and be not hampered, and confirmation rock core is cut off.
Step 5. deck goes out the heart, rock core length 8.9m, cored interval 3632m~3640.9m, drilling depth 8.9m, coring harvest
Rate 100%.
Finally it should be noted that the above content is merely illustrative of the technical solution of the present invention, rather than the present invention is protected
The limitation of range, the simple modification or equivalent replacement that those skilled in the art carry out technical solution of the present invention,
All without departing from the spirit and scope of technical solution of the present invention.
Claims (9)
1. a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery, it is characterised in that: it includes from bottom to top, successively
Pass through screw thread composite polycrystal-diamond core bit (1) interconnected, the first centralizer (2), high temperature and pressure core barrel
(3), the second centralizer (12), high temperature float valve (4), the first drill collar (5), leak stopping pipe nipple (6), the second drill collar (13), bumper jar
(7), heavy weight drill pipe (8), drop-in check valve seated connection head (9), heavy weight drill pipe (10) and common drilling rod (11), are superhigh temperature resistant
Metalwork, temperature resistance ability are more than 200 DEG C, first drill collar (5) be equipped with 1, the second drill collar (13) be equipped with 6 and respectively according to
Secondary axial interconnection.
2. a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery according to claim 1, it is characterised in that:
The outer diameter of the composite polycrystal-diamond core bit (1) is 212.7mm, the outer diameter of the first centralizer (2) is
177.8mm, the second centralizer (12) outer diameter be 177.8mm, the first drill collar (5) is outer diameter 203.2mm, the second drill collar (13)
Outer diameter be 203.2mm, the outer diameter of bumper jar (7) is 203.2mm.
3. a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery according to claim 1, it is characterised in that:
The high temperature and pressure core barrel (3), which uses, exempts from pitching structure.
4. a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery according to claim 1, it is characterised in that:
The high temperature float valve (4) is interior jet-preventing tool.
5. a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery according to claim 1, it is characterised in that:
The high temperature and pressure core barrel (3) is equipped with outer cylinder and inner cylinder, and outer cylinder is set with inner cylinder, the annular clearance distance between inside and outside cylinder
For 7.5mm.
6. a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery according to claim 5, it is characterised in that:
The high temperature and pressure core barrel (3) uses steel inner cylinder, and temperature resistance ability is more than 200 DEG C.
7. a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery according to claim 1, it is characterised in that:
The outer diameter of first righting strip (2) is 178mm.
8. a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery according to claim 1, it is characterised in that:
The high temperature float valve (4) is float valve fuse, and temperature resistance ability is more than 200 DEG C.
9. a kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery according to claim 1, it is characterised in that:
Distance is more than 10m between first centralizer (2) and the second centralizer (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910743279.5A CN110388190A (en) | 2019-08-13 | 2019-08-13 | A kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910743279.5A CN110388190A (en) | 2019-08-13 | 2019-08-13 | A kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110388190A true CN110388190A (en) | 2019-10-29 |
Family
ID=68288577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910743279.5A Pending CN110388190A (en) | 2019-08-13 | 2019-08-13 | A kind of drill assembly suitable for superhigh-temperature and-pressure well drilling and coring delivery |
Country Status (1)
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|---|---|
| CN (1) | CN110388190A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350466A (en) * | 2020-04-22 | 2020-06-30 | 中化明达生态环境治理有限公司 | Sampling method for improving sampling rate of oil sand layer |
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2019
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| PB01 | Publication | ||
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Application publication date: 20191029 |