CN208950495U - Horizontal well is with brill booster - Google Patents

Abstract

The utility model discloses a kind of horizontal wells with booster is bored, and is straight tube structure, and the straight tube front end is equipped with the screw thread connecting with screw motor, and rear end is equipped with the screw thread connecting with drill bit or junk mill；Straight tube front side wall is equipped with through-hole, retaining ring, plunger body, friction block, return spring and sealing ring are equipped in the through-hole, the friction block is fixed on one end face of plunger body, the end face passes through the retaining ring towards the through-hole outside, the plunger body other end passes through the return spring, is tightly connected with the straight tube through the sealing ring；It is successively arranged pressure stabilizing valve block, rear retaining ring, spring in the straight tube rear portion and tightens nut, the pressure stabilizing valve block is multiple valve blocks besieged city circular configuration, and periphery is connected through spring steel wire.The utility model reasonable and compact in structure, working service is convenient, reliable for operation, the horizontal well coiled tubing construction operation suitable for certain pressure range fluid.

Description

Horizontal well is with brill booster

Technical field

The utility model relates to drilling equipment technical field, especially a kind of horizontal well uses continuous oil with booster is bored Pipe operation, increasing action is in the pressure on drill bit or junk mill.

Background technique

In existing when repairing horizontal well operation process, bores mill bridge plug and ash plug Comparision is more, needed in drilling process Apply stable bit pressure on manipulating object.The bit pressure of application be the tubing string being made up of coiled tubing and tool pass to drill bit or On person's junk mill, since down-hole casing acts on the frictional resistance that coiled tubing and tool are kept a grip on, and since liquid stream is rubbed to what is kept a grip on Resistance and buoyancy are wiped, the tubing string bit pressure shown on operation instrument board not necessarily can accurately reflect the bit pressure on drill bit or junk mill, The bit pressure shown on instrument board is enough, and the true bit pressure on drill bit or junk mill does not reach predetermined value.Thus It is difficult to hold the real conditions of bit pressure, operating risk and time greatly increase.For the bad grasp of bit pressure, difficulty of construction is big, applies The features such as work overlong time, operating expenses is higher, is easy bit freezing, and accident treatment difficulty is big.

The prior art has following defects that

1. the true bit pressure on drill bit or junk mill is difficult to control, the competency profiling height to personnel.

2. increasing the construction time, accelerates the abrasion of drilling tool, make tubing string and drilling tool premature deterioration, scrap, to tubing string and drilling tool Quality and adaptability require it is high.

3. easy bit freezing, accident treatment are costly.

In addition, what is worked in 5 〞 or 5 1/2 〞 horizontal well casing pipes at present is pressurized instrument with brill, do not develop and use still.

Utility model content

The utility model in view of the deficiencies of the prior art, proposes a kind of horizontal well with boring booster, clever structure, construction party Just, it is not easy bit freezing.

In order to realize above-mentioned purpose of utility model, the utility model is the following technical schemes are provided: a kind of horizontal well increases with brill Depressor is straight tube structure, and the straight tube front end is equipped with the screw thread connecting with screw motor, and rear end is equipped with to be connected with drill bit or junk mill The screw thread connect；Straight tube front side wall is equipped with through-hole, is equipped with retaining ring, plunger body, friction block, return spring in the through-hole And sealing ring, the friction block are fixed on one end face of plunger body, which passes through the retaining ring towards outside the through-hole Side, the plunger body other end pass through the return spring, are tightly connected with the straight tube through the sealing ring；After the straight tube It is successively arranged pressure stabilizing valve block, rear retaining ring, spring in portion and tightens nut, the pressure stabilizing valve block is the round knot in multiple valve blocks besieged city Structure, periphery are connected through spring steel wire.

Further, the through-hole is equipped with 4-10, is axially spirally distributed along the straight tube.

Further, the plunger body is axial axially vertical with the straight tube.

Further, the friction block is made of chunky shape YG9 hard alloy, and hard alloy blocks cutting edge is field word in length and breadth Type, cutting edge is along with brill booster ontology axial alignment.

Further, the valve block is axis rotation around the elastic wire, drives the rear retaining ring axial along the straight tube It is mobile.

Further, the straight tube is having a size of 73mm or 89mm.

Further, the nut that tightens is constituted by the clamping nut that sets gradually and by tight nut.

Compared with prior art, the utility model has the advantage that with the rotary drilling with brill booster, and With boring in booster ontology under the pressure of drilling fluid stream, plunger body and friction block are mobile to internal surface of sleeve pipe, until friction block is close to Internal surface of sleeve pipe generates frictional force and makees dextrorotation drilling along internal surface of sleeve pipe, and the frictional force reaction force of generation forms bit pressure, this Frictional force reaction force derives from internal surface of sleeve pipe；It is sealed between plunger lower end and ontology by sealing ring；Upper end has return bullet Spring；Return spring is between plunger boss and retaining ring；By being welded to connect between plunger and friction block；Pressure maintaining valve makes liquid stream with brill Enough pressure is generated in booster ontology, and flow stream pressure is made to keep relative stability in a certain range, so that plunger generates diameter To displacement.

The utility model reasonable and compact in structure, working service is convenient, reliable for operation.

Detailed description of the invention

Fig. 1 is the utility model horizontal well with the structural schematic diagram for boring booster；

Fig. 2 is A-A direction view in Fig. 1；

Fig. 3 is horizontal well with the working state figure for boring booster；

Fig. 4 is B-B direction view in Fig. 3；

Diagram label: before 1 screw thread end, 2 retaining rings, 3 plunger bodies, 4 friction blocks, 5 return springs, 6 sealing rings, 7 pressure stabilizing valve blocks Front apron, 8 pressure stabilizing valve blocks, 9 valve blocks series connection steel wire, 10 pressure stabilizing valve block rear baffles, 11 pressure stabilizing valve block return springs, 12 spring compressions Nut, 13 by tight nut, screw thread end after 14,15 fluid cavitys, 16 casings.

Specific embodiment

The utility model is described in detail with reference to the accompanying drawing, the description of this part be only it is exemplary and explanatory, There should not be any restriction effect to the protection scope of the utility model.

As illustrated in fig. 1 and 2, a kind of horizontal well is straight tube structure with booster is bored, and the straight tube front end is equipped with and screw rod horse Up to the preceding screw thread end 1 of connection, rear end is equipped with the rear screw thread end 14 connecting with drill bit or junk mill；It is set on the side wall of the straight tube front There is through-hole, retaining ring 2, plunger body 3, friction block 4, return spring 5 and sealing ring 6 are equipped in the through-hole, the friction block 4 is fixed On 3 one end face of plunger body, which passes through the retaining ring 2 towards the through-hole outside, and 3 other end of plunger body is worn The return spring 5 is crossed, is tightly connected with the straight tube through the sealing ring 6；Pressure maintaining valve is successively arranged in the straight tube rear portion Piece 8, rear retaining ring 10, spring 11 and nut is tightened, the pressure stabilizing valve block 8 is that multiple valve blocks are encircled a city circular configuration, and periphery is through spring Steel wire 9 is connected.

Screw motor drives with booster rotation is bored, and is pressurized when the fluid in screw motor enters from preceding screw thread end 1 with brill When in device bulk flow body cavity 15, fluid generates upward thrust from 3 bottom of plunger body；The pressure size of fluid is by pressure maintaining valve valve block Aperture regulation；Fluid forces plunger body 3 bring up friction block 4 contact internal surface of sleeve pipe, make friction block hard alloy and 5 〞 or Person 5 1/2, and " internal surface of sleeve pipe generates back rotation frictional force, and the reaction force of frictional force is transmitted to the brill that rear screw thread end is driven Head or junk mill form bit pressure, creep into forward.

There are thread, preceding 2 7/8 〞 screw motor connector of screwed connection, rear screw thread with booster ontology rear and front end is bored Connect drill bit or junk mill；It is fluid course with boring among booster ontology；Plunger body with bore booster ontology wall thickness in, Plunger body bottom is had limit stop ring on plunger body by the radial pressure of liquid in fluid course, plunger body with boring booster sheet Body has sealing ring, there is return spring；Plunger body is with the length axes with brill booster ontology at plumbness；Have above plunger body The friction block of welding；Friction block is made of the chunky shape YG9 hard alloy welded, and hard alloy blocks cutting edge is matrix pattern in length and breadth, Cutting edge is along with brill booster ontology axial alignment.Pressure maintaining valve is housed with booster rear body is bored, spool is expansible valve block group Box-like, valve block is connected into circle with a 3mm spring steel wire, forms spool, has retaining ring before and after spool, wherein rear retaining ring is in valve block It can make axial displacement under pressure；Retaining ring is located next to tension spring afterwards, and tension spring is limited by spring compression nut.

Shown in Fig. 2, plunger body 3 is four arrangements being distributed along right hand helix shape, according to the length for boring booster ontology Difference, plunger body 3 rise to 5,6,7,8,9,10, even more, in this way, it is bigger with the spiral bit pressure that booster generates is bored, It is more advantageous to the raising of drilling efficiency.

With the rotary drilling with brill booster, and in brill booster ontology under the pressure of drilling fluid stream, plunger Body 3 and friction block 4 are mobile to internal surface of sleeve pipe, until friction block 4 is close to 16 inner wall of casing, generate frictional force and along internal surface of sleeve pipe Make dextrorotation drilling, the frictional force reaction force of generation forms bit pressure, this frictional force reaction force derives from internal surface of sleeve pipe；Plunger It is sealed between lower end and ontology by sealing ring；Upper end has return spring；Return spring is between plunger boss and retaining ring；Column By being welded to connect between plug and friction block；Pressure maintaining valve makes liquid stream generate enough pressure in brill booster ontology, and makes liquid stream Pressure keeps relative stability in a certain range, so that plunger generates radial displacement.

Plunger body 3 is being in that right hand helix shape is distributed with boring in booster ontology vertically, has one on each plunger body 3 Friction block 4, frictionally the close rotating friction force of block and internal surface of casing, makes to generate a kind of forward additional rotation with brill booster Turn pressure, this pressure is a kind of supplement of the bit pressure provided coiled tubing tubing string；Plunger body with bore booster ontology axle center Line is distributed on end face at homogeneous angular at vertical distribution.

Friction block 4 is circle, and the rubbing surface arc size of friction block 4 is identical as casing inner diameter size；Friction block 4 is by welding Chunky shape YG9 hard alloy composition, hard alloy blocks cutting edge is matrix pattern in length and breadth, and cutting edge is along axially arranging with boring booster ontology Column.

The spool of pressure stabilizing valve block 8 is expansible valve block combined type, and valve block is connected into circle, group with a 3mm spring steel wire 9 At spool；There is retaining ring before and after spool: pressure stabilizing valve block front apron 7 and pressure stabilizing valve block rear baffle 10, wherein rear retaining ring 10 is in valve block With spring steel wire 9 is axis and makees axial displacement under pressure；Retaining ring 10 is located next to tension spring 11 afterwards, and tension spring is adjusted by two Nut: it spring compression nut 12 and is limited by tight nut 13.

This can be 73mm and two kinds of 89mm with booster body dimension is bored.

When plunger contact is to internal surface of sleeve pipe, play the role of righting again for entire drilling tool.

The utility model, which is realized, actively increases bit pressure at the first time, so that bit pressure is kept relative stability, reduces drilling time, no The characteristics of being also easy to produce larger drilling cuttings, protecting drill string, reduce accident.

1. reinforcing the stability of tubing string and tool

Since coiled tubing and its connected downhole tool are an overlength (500~6500m, 1 3/4 "~2 ") sheet metal Tubule by the reaction force of manipulating object, generates disturbance and vibration during underground construction, thus seriously affect tubing string and The stability of tool is unfavorable for creeping into.After being equipped with booster is bored, tubing string and tool will not have reversion disturbance and unnecessary Vibration keeps drilling stable working reliable, improves drilling efficiency, extend the service life of tubing string.

2. reducing drilling time, operating expenses is reduced

Since pit shaft is longer, often there are the devices such as bridge plug, the cement plug of closing well section in the different depth position of pit shaft. In order to continue to construct below bridge plug, cement plug, bridge plug, cement plug is needed to bore, therefore, it is efficient creep into work must can not It is few；This just needs downhole well tool reasonable disposition and high-efficiency operation.The application of the utility model technology can reach this purpose. Due to reducing the construction time, all equipment relevant to construction are all greatly reduced using time and materials consumption, operating expenses It is substantially reduced.

3. optimizing drilling tool structure, accident is reduced

Existing drill assembly can not solve reversed disturbance and vibration of the drilling tool in drilling process, and thus exposure occurs Have the shortcomings that drilling tool, this disadvantage directly result in drilling without drilling depth bore mill and bit freezing.Bit freezing is more serious underground construction Accident handles bad, will to cause to be worth coiled tubing up to a million and scrap loss.To solve problems, in screw motor Between drill bit or junk mill plus one with booster is bored, and is solved the disturbance and vibration problems of tubing string, is strengthened bit pressure, keeps drilling work flat It is steady to carry out；Thus reduce bore meal particles, avoids shaft bottom drilling cuttings to the blocked portion of tubing string, effectively prevent the hair of lock of tool drilling It is raw.

The utility model realizes that coiled tubing underground work is steady, reliable.Effectively reduce construction time, simple and efficient, section Can, a large amount of expenses be saved, operating cost is low, reduces the generation for meeting the accidents such as card.

1. drilling effect.Coiled tubing underground construction operation, quite a few work is bores mill bridge plug and ash plug, though bridge plug So only 700mm long, but in net horizontal section, it is a very time-consuming laborious job that practical brill, which grinds off bridge plug,.It is practical that this is not used Before the novel booster with brill, brill is ground off used in a bridge plug time average out to 6 hours, after the utility model, is used Time average out to 3 hours within；Drilling time is just greatly saved in this；Effect is clearly.

2. the expense of reduction.It is not used before the utility model, boring and grinding off the bridge plug average cost an of net horizontal section is 50,000 Member, after the utility model, average cost drops to 30,000 yuan, saves 40% expense.

3. preventing sticking effect.It is not used before the utility model, average every 7 well time chance bit freezing is primary, practical new using this After type, card is just averagely met once using 23 wells time, this illustrates that preventing sticking effect is obvious.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and Retouching also should be regarded as the protection scope of the utility model.

Claims (7)

1. a kind of horizontal well is with brill booster, it is characterised in that: be straight tube structure, the straight tube front end is equipped with and screw motor connects The screw thread connect, rear end are equipped with the screw thread connecting with drill bit or junk mill；Straight tube front side wall is equipped with through-hole, the through-hole Interior to be equipped with retaining ring, plunger body, friction block, return spring and sealing ring, the friction block is fixed on one end face of plunger body, The end face passes through the retaining ring towards on the outside of the through-hole, and the plunger body other end passes through the return spring, and described straight Sealing ring described in Guan Jing is tightly connected；It is successively arranged pressure stabilizing valve block, rear retaining ring, spring in the straight tube rear portion and tightens nut, The pressure stabilizing valve block is that multiple valve blocks surround circular configuration, and periphery is connected through spring steel wire.

2. horizontal well as described in claim 1 is with brill booster, it is characterised in that: the through-hole is equipped with 4-10, along described straight Pipe is axially spirally distributed.

3. horizontal well as claimed in claim 1 or 2 is with brill booster, it is characterised in that: the plunger body axial direction and the straight tube It is axially vertical.

4. horizontal well as described in claim 1 is with brill booster, it is characterised in that: the friction block is the conjunction of chunky shape YG9 hard Gold is made, and hard alloy blocks cutting edge is matrix pattern in length and breadth, and cutting edge is along with brill booster ontology axial alignment.

5. horizontal well as described in claim 1 is with brill booster, it is characterised in that: the valve block is axis rotation around elastic wire, The rear retaining ring is driven to move axially along the straight tube.

6. horizontal well as described in claim 1 is with brill booster, it is characterised in that: the straight tube diameter is 73mm or 89mm.

7. horizontal well as described in claim 1 is with boring booster, it is characterised in that: the nut that tightens is by the compression that sets gradually It nut and is constituted by tight nut.