CN205297337U - Cave ware is drawn in reaming for well drilling - Google Patents
Cave ware is drawn in reaming for well drilling Download PDFInfo
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- CN205297337U CN205297337U CN201521089861.8U CN201521089861U CN205297337U CN 205297337 U CN205297337 U CN 205297337U CN 201521089861 U CN201521089861 U CN 201521089861U CN 205297337 U CN205297337 U CN 205297337U
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Abstract
The utility model discloses a cave ware is drawn in reaming for well drilling belongs to oil drilling instrument field. That be used for handling the complicated well section of undergauge and the instrument that hinders is met to the case, include at least: lower clutch, body, compound piece, wing, hydrophthalmia, top connection, the wing is the wing structure, including head and root, the shape that the head of wing combined together for horizontal plane and sector, the horizontal plane is the bottom surface of head, is provided with compound piece, and the sector is the higher authority of head, is provided with compound piece. Through the produced reaction force of drilling fluid injection, promote the wing and expand to drive compound piece increasing working radius, termination of pumping after reaming to well is unblocked, the enlarger wing is withdrawed to the body, rises with whole drilling tools in the pit, uses portably safe and reliable. Can realize synchronous reaming hole, creep into, the case operation, the avoidance of repetition case to improve the well drilling success rate. Be suitable for the shallow layer well drilling construction that is less than 1500m with the well depth. Also can be used to the construction of conventional bore hole reaming hole.
Description
Technical field
This utility model relates to oil drilling tool field, particularly to a kind of drilling well hole-enlarging dredging device.
Background technology
One of complex situations that oil and gas well drilling process is modal, very harmful are that setting of casing is hampered, and often lead to well scrap as dealt with improperly. By water filling, some being affected the water sensitivity mud shale stratum that aquation is serious, wriggling undergauge, well slough very easily occur, drilling process is sufficiently complex. Also often there are similar complex situations in some water sensitivity saline beds or salt cream/mud stone alternating layers scene.
For the process that similar stratum setting of casing is hampered, many employing circulating fluid techniques carry out the block that collapses at present, then recover setting of casing. As turn on pump difficulty occurred or circulating invalid, then need to trip out whole sleeve pipe, adopt conventional drilling tool structure drifting, reaming, then setting of casing again. And the stratum that some wriggling intervals are very short, it is more easy to and occurs in the situation that same stratum setting of casing is hampered. So repeating the result processed, often resulting in well large area well slough, complexity even cannot drilling well.
Current domestic existing fluid pressure type is with boring reducing drilling tool and good-for-nothing association type reamer, but all cannot be used for sleeve pipe reaming hole. It is hampered reluctant problem for setting of casing undergauge, well slough, adopts and synchronize reaming hole, creep into, cased drilling tool not yet comes out.
In realizing process of the present utility model, inventor have found that prior art at least there is problems in that
It is special that existing hole-enlarging dredging device draws cave for the probing process Coal Seam Collapse reaming of ore deposit, ground, cannot be used for field of oil drilling, because being primarily present problems with for oil drilling: one is that wing maximum diameter of enlarged bore only has 310mm, it is impossible to meet the requirement of bad ground undergauge reaming hole. Two is that wing runner adopts fluid to be clear water, and the usual Holes of Complicated Wells section drilling well high solid phase of many employings, high viscosity and highdensity drilling fluid, due to drilling fluid corrosion and erosion runner, hole-enlarging dredging device body easily stings leakage.Three is the requirement that cannot meet drilling technology 12-15MPa high pump pressure. Four is that hole digging device wing is connected complexity with drill bit, and wing and drill bit, apart from long, cause making step and drilling process is unstable.
Summary of the invention
In order to solve problem of the prior art, this utility model embodiment provides a kind of drilling well hole-enlarging dredging device. In order to the situation processing undergauge Holes of Complicated Wells section and setting of casing is hampered, it is possible to achieve synchronize reaming hole, creep into, casing job, it is to avoid repeat setting of casing, thus improving drilling success. Described technical scheme is as follows:
A kind of drilling well hole-enlarging dredging device, at least includes: lower contact, body, composite sheet, wing, hydrophthalmia, top connection, and described wing is wing structure, including head and root; The head of described wing is the shape that horizontal plane combines with covering of the fan, and horizontal plane is the bottom surface of head, is provided with composite sheet, and covering of the fan is above head, is provided with composite sheet.
Described body is cylinder, is provided with central through hole, and body upper part is provided with external diameter less than described body diameter and the top connection with through hole, and body lower part is provided with external diameter less than described body diameter and the lower contact with through hole.
Described body, top connection and lower contact global formation are integrated, joining place chamfered transition, and the central through hole of described body is through with the through hole of described top connection and lower contact.
Described wing is symmetricly set on the both sides, middle and lower part of described body.
The root of described wing is circular shape, is embedded in the wing cavity that described inner body wall is arranged, and the head of wing stretches out described body outer wall.
The head extension elongation of described wing is 2nd/to three/2nd of described wing entire length, and extension is provided with hydrophthalmia.
Described wing is launched by the counteracting force that drilling fluid injection produces and drives described composite sheet to strengthen the radius of clean-up.
Described composite sheet material is cloth diamond, and composite sheet is several, is evenly distributed on described wing head.
Described lower contact external diameter bottom undergauge, is provided with external screw thread.
Described top connection external diameter is cylinder, and inner chamber is provided with female thread.
The technical scheme that this utility model embodiment provides has the benefit that
By the produced counteracting force of drilling fluid injection, wing is promoted to launch to drive composite sheet to strengthen the radius of clean-up; Termination of pumping after reaming to well is unimpeded, reamer wing is retracted to body, is tripped out by whole down-hole equipments, easy to use, safe and reliable.
Wriggling stratum undergauge, well slough is met for shallow drilling process is bored, cause the situation that drilling well, well logging, setting of casing difficulty cause well to be scrapped, under enter drilling well hole-enlarging dredging device, reaming hole process can realize the inside and outside circulating fluid of sleeve pipe by water head allocation, revoling tube simultaneously, realize well by increasing reaming size unimpeded, effectively prevent the situation of bit freezing, card sleeve pipe.
For the situation processing undergauge Holes of Complicated Wells section and setting of casing is hampered, it is possible to achieve synchronize reaming hole, creep into, casing job, it is to avoid repeat setting of casing, thus improving drilling success. It is suitable for and constructs with the well depth shallow drilling less than 1500m. Can also be used for conventional bore hole reaming hole construction.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the drilling well hole-enlarging dredging device structural representation that this utility model embodiment provides.
In figure, each symbol represents that implication is as follows:
1 lower contact, 2 bodies, 3 composite sheet, 4 wings, 5 hydrophthalmias, 6 top connections.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, this utility model embodiment is described in further detail.
Shown in Figure 1, this utility model embodiment provides a kind of drilling well hole-enlarging dredging device, is a kind of be applied in Process of Oil Well Drilling to process the instrument that hole shrinkage is serious and setting of casing is hampered. This hole digging device at least includes: lower contact 1, body 2, composite sheet 3, wing 4, hydrophthalmia 5, top connection 6 etc.; Specifically, described body 2 is cylindrical tube, is provided with central through hole, and body 2 top is provided with the external diameter external diameter less than body 2 and the top connection with through hole 6, and body 2 bottom is provided with the external diameter external diameter less than body 2 and the lower contact with through hole 1; Described body 2, top connection 6 and lower contact 1 global formation are integrated, 45 degree of chamfered transition of joining place, and the central through hole of body 2 is through with the through hole of top connection 6 and lower contact 1; The middle and lower part of described body 2 is symmetrically arranged with two panels and draws the wing 4 in cave for reaming.
Described wing 4 is wing structure, and including root and head, its root is circular shape, it is embedded in the wing cavity that body 2 inwall is arranged, head stretches out body 2 outer wall, and extension elongation is 2nd/to three/2nd of wing 4 entire length, and extension is provided with hydrophthalmia 5; The head of wing 4 is the shape that horizontal plane combines with covering of the fan, and bottom is horizontal plane, is provided with several composite sheet 3, and top is covering of the fan, is again provided with several composite sheet 3, and described composite sheet 3 material is cloth diamond, is evenly distributed on wing 4 head. In drilling process, by the produced counteracting force of drilling fluid injection, wing 4 is promoted to launch to drive composite sheet 3 to strengthen the radius of clean-up.
Described lower contact 1 is pipe joint, its external diameter bottom undergauge, is provided with 431 external screw threads.
Described top connection 6 is pipe joint, and its external diameter is cylinder, and inner chamber is provided with 430 female threads.
The operation principle of this utility model embodiment: when hole digging device enters duty, drilling fluid is spouting from the hydrophthalmia 5 reaming wing 4, the produced counteracting force of its injection makes reaming wing 4 launch, longitudinal shear force is received from screw rod, hole-enlarging dredging device wing rotates straight-cut stratum, thus reaching to expand cave, expand the effect of well; Termination of pumping during end-of-job, the counteracting force that injection produces disappears, and wing 4 is recovered in wing cavity under the effect with hole wall frictional force at gravity or wing 4.
This utility model embodiment drilling well hole-enlarging dredging device be technically characterized by comprising the steps as follows: in the construction that setting of casing is hampered, drilling fluid is from the basis of the longitudinally normal drilling process of ground face-pumping �� drilling rod �� screw rod �� central passage �� drill bit �� oil jacket annular space �� ground pollution discharge pond, establish again the horizontal reaming from screw rod �� central passage �� wing and draw cave technique, thus reaching to expand the purpose of complicated section well while drilling well. When setting of casing is hampered, a circulation short sleeve is connected after laying down a sleeve pipe, casing string is sitting in well head, then enter under in sleeve pipe: the unconventional BHA of one of pilot bit+hydraulic reamer+power screw+drilling rod, under be drilled into the well section that is hampered, turn on pump is provided power, waterpower mode to open reamer wing by screw rod to carry out reaming hole to unimpeded. Then pull out of hole and recover setting of casing.
The practical situation can being hampered according to stratum undergauge, well slough and setting of casing, and the BHA that different borehole size selection is different.Such as the situation of �� 244.5mm sleeve pipe under �� 311mm well, can entering down �� 215.9mm pilot bit and �� 216-335mm reamer, maximum reaming hole hole diameter reaches 335mm, and hole enlargement ratio reaches 7.72%. In use procedure, drilling fluid solid particulate matter diameter can not be excessive, and content can not be too much, in order to avoid blocking nozzle, affects normal operation.
In addition, this utility model embodiment also has the advantage that, 2013, in over-aged bulk carriers L oil reservoir 2+3 trial zone drilling process, the drilling well promoting the use of this hole-enlarging dredging device has 10 wells, accumulative reaming well section 468.08m, substantially efficiently solve this region owing to BC layer is (for Gao Shui, quick property stratum) undergauge, hole collapse cause bit freezing, the complex situations being hampered of trapping, drilling success 100%, average drilling period 17.5 days. There are 21 wells without the drilling well using this hole-enlarging dredging device, scrap 1 mouthful of well, drilling success 95.2%, average drilling period 26.8 days.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (10)
1. a drilling well hole-enlarging dredging device, at least includes: lower contact, body, composite sheet, wing, hydrophthalmia, top connection, it is characterised in that described wing is wing structure, including head and root; The head of described wing is the shape that horizontal plane combines with covering of the fan, and horizontal plane is the bottom surface of head, is provided with composite sheet, and covering of the fan is above head, is provided with composite sheet.
2. drilling well hole-enlarging dredging device according to claim 1, it is characterized in that, described body is cylinder, it is provided with central through hole, body upper part is provided with external diameter less than described body diameter and the top connection with through hole, and body lower part is provided with external diameter less than described body diameter and the lower contact with through hole.
3. drilling well hole-enlarging dredging device according to claim 1, it is characterised in that described body, top connection and lower contact global formation are integrated, joining place chamfered transition, the central through hole of described body is through with the through hole of described top connection and lower contact.
4. drilling well hole-enlarging dredging device according to claim 1, it is characterised in that described wing is symmetricly set on the both sides, middle and lower part of described body.
5. drilling well hole-enlarging dredging device according to claim 1, it is characterised in that the root of described wing is circular shape, is embedded in the wing cavity that described inner body wall is arranged, and the head of wing stretches out described body outer wall.
6. drilling well hole-enlarging dredging device according to claim 1, it is characterised in that the head extension elongation of described wing is 2nd/to three/2nd of described wing entire length, and extension is provided with hydrophthalmia.
7. drilling well hole-enlarging dredging device according to claim 1, it is characterised in that described wing is launched by the counteracting force that drilling fluid injection produces and drives described composite sheet to strengthen the radius of clean-up.
8. drilling well hole-enlarging dredging device according to claim 1, it is characterised in that described composite sheet material is cloth diamond, and composite sheet is several, is evenly distributed on described wing head.
9. drilling well hole-enlarging dredging device according to claim 1, it is characterised in that described lower contact external diameter bottom undergauge, is provided with external screw thread.
10. drilling well hole-enlarging dredging device according to claim 1, it is characterised in that described top connection external diameter is cylinder, and inner chamber is provided with female thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089861.8U CN205297337U (en) | 2015-12-24 | 2015-12-24 | Cave ware is drawn in reaming for well drilling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521089861.8U CN205297337U (en) | 2015-12-24 | 2015-12-24 | Cave ware is drawn in reaming for well drilling |
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| CN205297337U true CN205297337U (en) | 2016-06-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843244A (en) * | 2018-06-04 | 2018-11-20 | 中石化石油工程技术服务有限公司 | Underground primacord explosion expanding method |
| CN110159185A (en) * | 2019-05-21 | 2019-08-23 | 西安航空职业技术学院 | A kind of hydraulic rotary drill-following reamer |
| CN111032989A (en) * | 2017-07-13 | 2020-04-17 | 艾奎诺能源公司 | Cutting tool with pivotally mounted cutters |
| CN111271000A (en) * | 2018-12-05 | 2020-06-12 | 武穴市金锐精密锻造有限公司 | Down-the-hole drill bit |
-
2015
- 2015-12-24 CN CN201521089861.8U patent/CN205297337U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111032989A (en) * | 2017-07-13 | 2020-04-17 | 艾奎诺能源公司 | Cutting tool with pivotally mounted cutters |
| CN111032989B (en) * | 2017-07-13 | 2022-04-19 | 艾奎诺能源公司 | Cutting tool with pivotally mounted cutters |
| CN108843244A (en) * | 2018-06-04 | 2018-11-20 | 中石化石油工程技术服务有限公司 | Underground primacord explosion expanding method |
| CN108843244B (en) * | 2018-06-04 | 2020-07-24 | 中石化石油工程技术服务有限公司 | Underground detonating cord explosion hole expanding method |
| CN111271000A (en) * | 2018-12-05 | 2020-06-12 | 武穴市金锐精密锻造有限公司 | Down-the-hole drill bit |
| CN110159185A (en) * | 2019-05-21 | 2019-08-23 | 西安航空职业技术学院 | A kind of hydraulic rotary drill-following reamer |
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