CN211474073U - Multifunctional bridge plug made of fully soluble metal - Google Patents
Multifunctional bridge plug made of fully soluble metal Download PDFInfo
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- CN211474073U CN211474073U CN201921226705.XU CN201921226705U CN211474073U CN 211474073 U CN211474073 U CN 211474073U CN 201921226705 U CN201921226705 U CN 201921226705U CN 211474073 U CN211474073 U CN 211474073U
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- slip
- retainer ring
- plug
- block
- bridge plug
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Abstract
The utility model discloses a full soluble metal multifunctional bridge plug, which comprises a guide rod (1), a stop block (2), a first slip (3), a first inclined ejector block (4), a rubber plug (5), a first retainer ring (6), a second retainer ring (7), a second inclined ejector block (8), a second slip (9) and a plug (10); the stop block (2), the first slip (3), the first inclined ejecting block (4), the rubber plug (5), the first retainer ring (6), the second retainer ring (7), the second inclined ejecting block (8), the second slip (9) and the plug (10) are sequentially arranged on the guide rod (1); the stop block (2), the first inclined ejector block (4) and the second inclined ejector block (8) are fixed on the guide rod (1) through screws. The sealing device has the advantages of convenience in assembly, simple structure, 100% of sealing, 360-degree rotation of the check ring for plugging at any time, high operation efficiency and the like. It is mainly suitable for various high, medium and low temperature oil, gas and water wells with casing pipe inner diameter.
Description
Technical Field
The utility model provides a multi-functional bridging plug of full soluble metal, especially relates to a bridging plug that operation effect is high, belongs to electron machinery technical field.
Background
In recent years, international oil prices are low for a long time, conventional composite fast drilling bridge plugs are high in cost, drilling plug depths of long horizontal segmented coiled tubing are limited, risks of coiled tubing construction engineering are increased, secondary pollution to stratum is serious in later-stage drilling plug treatment, and yield is affected. The well building period of the fast drilling bridge plug is long, and the production efficiency is influenced. The recovery of the shaft after the operation of the large-drift-diameter bridge plug is difficult, and repeated transformation or secondary production is influenced.
The glue barrel is too large, the quality levels are not uniform, the expected sealing effect cannot be achieved, or the glue barrel contacts with the solution in advance, starts to dissolve in advance, and cannot achieve the expected effect at all; some products have the defects of overlong length, large volume, heaviness, low well descending speed, increased production and transportation cost and the like.
Disclosure of Invention
The invention solves the defects of the prior art through experimental data, and particularly discloses an all-soluble metal multifunctional bridge plug which comprises a guide rod 1, a stop block 2, a first slip 3, a first inclined ejecting block 4, a rubber plug 5, a first retaining ring 6, a second retaining ring 7, a second inclined ejecting block 8, a second slip 9 and a plug 10; the stop block 2, the first slip 3, the first inclined ejecting block 4, the rubber plug 5, the first retainer ring 6, the second retainer ring 7, the second inclined ejecting block 8, the second slip 9 and the plug 10 are sequentially arranged on the guide rod 1; the stop block 2, the first inclined ejector block 4 and the second inclined ejector block 8 are fixed on the guide rod 1 through screws.
The first slips 3 are evenly divided into a plurality of equal parts; each equal part is 6-60 degrees, and the distance between equal parts is 2-2.8 mm.
The aliquot is divided into an outer aliquot 301 and an inner aliquot 302; the outer halves 301 are distributed over the outer diameter of the first slip 3; the inner halves 302 are distributed about the inner diameter of the first slip 3.
The length of the first opening 11 of the outer equal part 301 from outside to inside is four fifths of the length; the second opening 12 of the inner portion 302 has a length of four fifths from the inside to the outside.
The first slip 3 and the second slip 9 are symmetrical in structure.
The first slip 3 moves along the first pitched roof block 4; the second slip 9 moves along the second pitched roof block 8. The first slip and the second slip can share the stress which is evenly stressed and transmitted to the rubber plug 5, so that the stress surface of the rubber plug 5 is evenly sealed by 100 percent.
The first retaining ring 6 and the second retaining ring 7 rotate freely for 360 degrees so as to bear different pressures and relieve the extrusion of the second slip (9).
The first retainer ring 6 is divided into a plurality of equal parts on average; each equal part is 6-60 degrees, and the distance between equal parts is 2-2.8 mm.
The first retainer ring 6 and the second retainer ringThe structure of the ring 7 is the same; the distance between the first retainer rings 6A is 12 mm; the distance B is 4mm, and the outer diameter C is 82.3 mm; the second retainer 7A1The distance is 14 mm; b is1Distance of 6mm, D11.54mm，C1The outer diameter is 87 mm.
The outer diameter of the sealing barrel is 107-109 mm; the inner diameter is 83-83.5 mm, and the extrusion angle of the connecting surface of the sealing barrel is 35-36。. The dimensions must strictly adhere to the proportion, the bridge plug can be produced according to the size of the bridge plug in equal proportion, the dimensions cannot be modified randomly, and a large amount of experimental data is carried out, otherwise the expected operation effect cannot be achieved.
The invention has the beneficial effects that: the equipment is convenient, simple structure, and sealed 100%, 360 degrees rotations of retaining ring shutoff at any time, the operating efficiency is high.
In general, the present invention is suitable for high, medium and low temperature oil, gas and water wells with various casing pipe inner diameters. The bridge plug metal and the rubber cylinder can be dissolved in water solution at the temperature of 30-80 ℃ and 70-95 ℃ respectively, and can realize pressure bearing and rapid dissolution in a complex shaft environment and complete dissolution in 7-10 days after construction. The slips are made of small ceramic particles, and insoluble substances which are dissolved and remained in a well are less than 0.1 percent.
The fracturing device is suitable for the fracturing transformation of pumping bridge plugs of small-size well bores such as sidetracking and deep wells; the method is suitable for low-temperature, medium-temperature and high-temperature wells and various environments with low mineralization and high mineralization; is suitable for oil, gas and water wells; the method is suitable for plugging the shaft which needs to be dissolved in a short time. Thereby solving the defects of different programs in the existing market production.
Drawings
FIG. 1 is a fully soluble metal multifunctional bridge plug;
FIG. 2 is a schematic view of a first slip;
FIG. 3 is a schematic view of a first retainer ring;
FIG. 4 is a second stop diagram;
fig. 5 is a schematic view of a rubber barrel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the invention discloses an all-soluble metal multifunctional bridge plug, which comprises a guide rod (1), a stop block (2), a first slip (3), a first inclined ejector block (4), a rubber plug (5), a first retainer ring (6), a second retainer ring (7), a second inclined ejector block (8), a second slip (9) and a plug (10); the stop block (2), the first slip (3), the first inclined ejecting block (4), the rubber plug (5), the first retainer ring (6), the second retainer ring (7), the second inclined ejecting block (8), the second slip (9) and the plug (10) are sequentially arranged on the guide rod (1); the stop block (2), the first inclined ejector block (4) and the second inclined ejector block (8) are fixed on the guide rod (1) through screws.
Further the first slips (3) are equally divided into equal parts; each equal part is 6-60 degrees, and the distance between equal parts is 2-2.8 mm.
Further the aliquot is divided into an outer aliquot (301) and an inner aliquot (302); the outer equal parts (301) are distributed on the outer diameter of the first slip (3); the inner halves (302) are distributed over the inner diameter of the first slip (3).
Further, the length of the opening (11) of the outer equal part (401) from outside to inside is four fifths of the length; the length of the gap (12) of the inner equal part (402) from inside to outside is four-fifths of the length.
Furthermore, the first slip (3) and the second slip (9) are symmetrical in structure.
Further the first slip (3) is moved along the first pitched roof block (4); the second slip (9) moves along the second pitched roof block (8). The first slip and the second slip can share the stress transmitted to the rubber plug (5) by uniform stress, so that the stress surface of the rubber plug (5) is uniformly sealed by 100%.
Furthermore, the first retaining ring (6) and the second retaining ring (7) rotate freely for 360 degrees so as to bear different pressures and relieve the extrusion of the second slip (9).
Further, the first retainer ring (6) is equally divided into a plurality of equal parts; each equal part is 6-60 degrees, and the distance between equal parts is 2-2.8 mm.
The first retainer ring (6) and the second retainer ring (7) have the same structure; the distance between the first retainer rings (6) A is 12 mm; the distance B is 4mm, and the outer diameter C is 82.3 mm; the second retainer ring (7) A1The distance is 14 mm; b is1Distance of 6mm, D11.54mm，C1The outer diameter is 87 mm.
Further, the outer diameter of the sealing barrel is 107-109 mm; the inner diameter is 83-83.5 mm, and the extrusion angle of the connecting surface of the sealing barrel is 35-36。。
The diameter of the bridge plug barrel is 3.5 inches, 4 inches, 4.5 inches, 5 inches and 5.5 inches, and the realization precision of the specification within 4.5 inches is particularly difficult and is successful after multiple experiments.
1. The pressure resistance was 10,000psi (70 MPa).
2. The temperature can be kept between 40 ℃ and 120 ℃ (the model can be selected).
3. The outer surface of the bridge plug slip is coated with a resin breakable protective film, the protective film can protect the bridge plug slip from reacting with well fluid within 24 hours, the protective film falls off after 24 hours, and the bridge plug and the well fluid react rapidly.
4. The cable/hydraulic setting tool sets.
5. The whole bridge plug is made of clear water soluble material, including a rubber cylinder.
6. The bridge plug length is 294.68mm, and the maximum setting distance is 80 mm.
7. The high-grade steel sleeve pipe is suitable for the P110 BG 125V.
8. Checking that the connecting rod body and the screw thread of the adapter are intact, and smearing screw thread oil on the screw thread.
9. Checking the appearance of the bridge plug, keeping the screw thread in the guide shoe intact, and smearing screw thread oil on the screw thread.
10. The screw thread at the lower end of the connecting rod of the adapter is connected with the screw thread inside the guide shoe of the bridge plug, and the screw thread is arranged until the limiting top of the connecting rod of the adapter is pressed against the ball seat of the bridge plug, so that the connecting rod of the adapter is not too tight, and the limiting damage of the ball seat of the connecting rod of the adapter is prevented.
The operation of the construction site is focused on
1. And (3) within 48 hours before the bridge plug is lowered, drifting with a drift size of a corresponding size or larger or simulating pumping.
2. The continuous operation is kept from the descending of the bridge plug to the fracturing as much as possible, so that the bridge plug is prevented from being dissolved in advance when the bridge plug is in the well for a long time.
3. The running speed of the vertical shaft section is controlled to be 50-70 m/min under normal conditions, and the maximum running speed is 70 m/min.
4. The entering speed of the horizontal section is controlled to be 35-40 m/min under normal conditions, and the maximum entering speed is 50 m/min.
5. And recommending fracturing operation within 12-18 hours after the bridge plug is seated.
Note: if the operation time is delayed, clear water with the volume 1-1.5 times of that of the shaft can be pumped to reduce the mineralization degree of the shaft.
6. And throwing a fracturing ball 30 minutes before fracturing, and immediately pumping after throwing the ball. Soluble fracturing ball pumping: when the pumping liquid amount difference of 10 m3 reaches the casing volume, the pumping discharge is reduced from 3-4 m3/min to 1.5-2 m3/min, and the ball is fractured after being seated. The three steps of ball throwing, pumping and fracturing are continuously operated.
If the production is not planned, 1% of possible situations are compensated, and the following ways are adopted:
when the bridge plug is lowered, the cable is lifted up when being blocked, the lowering speed is reduced, and the cable is lowered again. And if the same position is blocked again, the cable is pulled out, and the drift size drift is lowered.
And (3) lifting the cable to a safe tensile force which can be borne by the cable when the bridge plug is lowered to meet the clamp, if the bridge plug cannot be lifted to be loose, injecting high-concentration (10%) potassium chloride aqueous solution or 3-5% hydrochloric acid to quickly dissolve the bridge plug, and taking out the pumping pipe string for inspection after the bridge plug is dissolved or loosened.
If the ignition releasing occurs in the midway setting and the like in the process of putting the bridge plug into the well, high-concentration potassium chloride or 3-5% hydrochloric acid can be pumped in to dissolve the bridge plug, the plug is detected after the dissolution is finished, powder and slag generated by the dissolution are flushed into the lower part, and a new bridge plug is pumped in again.
And controlling the flowback speed to be 15 m/min when sand blockage occurs in the fracturing process, and flowback sand washing. And if sand blockage still occurs, putting the coiled tubing into the sand washing machine to wash out the sand.
Claims (10)
1. The fully-soluble metal multifunctional bridge plug is characterized by comprising a guide rod (1), a stop block (2), a first slip (3), a first inclined ejecting block (4), a rubber plug (5), a first retainer ring (6), a second retainer ring (7), a second inclined ejecting block (8), a second slip (9) and a plug (10); the stop block (2), the first slip (3), the first inclined ejecting block (4), the rubber plug (5), the first retainer ring (6), the second retainer ring (7), the second inclined ejecting block (8), the second slip (9) and the plug (10) are sequentially arranged on the guide rod (1); the stop block (2), the first inclined ejector block (4) and the second inclined ejector block (8) are fixed on the guide rod (1) through screws.
2. An all soluble metal multifunctional bridge plug according to claim 1, characterized in that the first slips (3) are divided equally into equal parts; each of the plurality of equal parts is 6-60 degrees, and the distance between each equal part is 2-2.8 mm.
3. The multifunctional bridge plug of claim 1, wherein the equal parts are divided into an outer equal part (301) and an inner equal part (302); the outer equal parts (301) are distributed on the outer diameter of the first slip (3); the inner equal parts (302) are distributed on the inner diameter of the first slip (3); the length of the first opening (11) of the outer equal part (301) from outside to inside is four fifths of the length; the length of the second gap (12) of the inner equal part (302) from inside to outside is four-fifths of the length.
4. An all soluble metal multifunctional bridge plug according to claim 1, characterized in that the first slip (3) and the second slip (9) are symmetrical in structure.
5. An all soluble metal multifunctional bridge plug according to claim 1, characterized in that the first slips (3) move along the first pitched roof block (4); the second slip (9) moves along the second pitched roof block (8).
6. The multifunctional bridge plug of the fully soluble metal as claimed in claim 1, wherein the first slips (3) and the second slips (9) can share the stress of uniform stress transmission to the rubber plug (5), so that the stress surface of the rubber plug (5) is uniformly sealed by 100%.
7. The multifunctional bridge plug of the fully soluble metal as claimed in claim 1, wherein the first retainer ring (6) and the second retainer ring (7) are freely rotated for 360 degrees so as to bear different pressures and relieve the extrusion of the second slips (9).
8. The multifunctional bridge plug of the all-soluble metal as claimed in claim 1, wherein the first retainer ring (6) is divided into equal parts on average; each equal part is 6-60 degrees, and the distance between equal parts is 2-2.8 mm.
9. The multifunctional bridge plug of the all-soluble metal as claimed in claim 1, wherein the first retainer ring (6) and the second retainer ring (7) are identical in structure; the distance between the first retainer rings (6) A is 12 mm; the distance B is 4mm, and the outer diameter C is 82.3 mm; the distance between the second retainer ring (7) A1 is 14 mm; the distance between the B1 and the C1 is 6mm, D11.54mm and 87 mm.
10. The multifunctional bridge plug of the all-soluble metal as claimed in claim 1, wherein the outer diameter of the rubber plug (5) is 107-109 mm; rubber buffer (5) internal diameter 83~83.5mm, but the face extrusion angle of connecting of rubber buffer (5) is 35~36 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921226705.XU CN211474073U (en) | 2019-07-31 | 2019-07-31 | Multifunctional bridge plug made of fully soluble metal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921226705.XU CN211474073U (en) | 2019-07-31 | 2019-07-31 | Multifunctional bridge plug made of fully soluble metal |
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| Publication Number | Publication Date |
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| CN211474073U true CN211474073U (en) | 2020-09-11 |
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| CN201921226705.XU Active CN211474073U (en) | 2019-07-31 | 2019-07-31 | Multifunctional bridge plug made of fully soluble metal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302571A (en) * | 2019-07-31 | 2021-02-02 | 陕西海格瑞恩实业有限公司 | Bridge plug for fully-soluble metal casing |
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2019
- 2019-07-31 CN CN201921226705.XU patent/CN211474073U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302571A (en) * | 2019-07-31 | 2021-02-02 | 陕西海格瑞恩实业有限公司 | Bridge plug for fully-soluble metal casing |
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