CN103470237A - Unconventional reverse opposite penetration method and rotary signal navigator - Google Patents
Unconventional reverse opposite penetration method and rotary signal navigator Download PDFInfo
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- CN103470237A CN103470237A CN2013104038200A CN201310403820A CN103470237A CN 103470237 A CN103470237 A CN 103470237A CN 2013104038200 A CN2013104038200 A CN 2013104038200A CN 201310403820 A CN201310403820 A CN 201310403820A CN 103470237 A CN103470237 A CN 103470237A
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Abstract
The invention provides an unconventional reverse opposite penetration method and a rotary signal navigator. The unconventional opposite penetration method comprises the following steps of 1, arranging a well site (3) of a vertical well (2) above a horizontal well (1); 2, stopping drilling until a first set distance is reserved between the vertical well (2) and the horizontal well (1); 3, sending the rotary signal navigator and a probing tube (4) to a target position at the tail end of the horizontal well (1); 4, tripping a strong magnetic sub (6) into the bottom of the vertical well (2), and drilling the vertical well (2) to the target position at the tail end of the horizontal well (1). Thickened oil old wells in oil fields or wasted horizontal wells can increase production, improve efficiency and be reused after being subjected to fireflooding modification by means of the unconventional reverse opposite penetration method and the rotary signal navigator.
Description
Technical field
The present invention relates to the oilfield exploitation technical field, concrete is a kind of unconventional oppositely to the method for wearing, or a kind of rotating signal omniselector.
Background technology
At viscous crude field, arrived the later stage of recovering the oil, the phenomenon that glides or stop production has appearred in general old well (straight well) production capacity, in order to improve the recovery ratio of old well, people can adopt the mode of fireflood to be increased production, need in this case to bore water horizontal well and this straight well and carry out wearing, this to the technology of wearing for conventional to the technology of wearing, conventional to the technology of wearing be horizontal well to wearing straight well, and then realize fireflood.And while for some old wells, being horizontal well, can't adopt conventional is its volume increase to the technology of wearing.
Summary of the invention
In order to solve existing, to the technology of wearing, can't be the technical problem of horizontal well volume increase.The invention provides a kind of unconventionally oppositely to the method for wearing and rotating signal omniselector, this is unconventional oppositely can realize that to the method for wearing and rotating signal omniselector straight well, to wearing horizontal well, makes old horizontal well realize the purpose of volume increase, synergy, energy-saving and emission-reduction.
The present invention for the technical scheme that solves its technical problem employing is: a kind of unconventional oppositely to the method for wearing, comprise the following steps:
Step 1: the well site that is provided for drilling straight-hole above the end of horizontal well;
Step 2: when this straight well is drilled into apart from this horizontal well first setpoint distance, this straight well stops creeping into;
Step 3: will deliver to for the inserting tube that receives magnetic signal the target location of this horizontal well end;
Step 4: the bottom to this straight well is lowered to for launching the strong magnetic short section of magnetic signal, and this straight well is crept into to the target location of this horizontal well end.
In step 2, this first setpoint distance is 80m～120m.
In step 3, with the drilling rod of workover rig, inserting tube is delivered to the target location of this horizontal well end.
The cable of inserting tube is arranged in this drilling rod.
Inserting tube is the MGS inserting tube, and inserting tube is arranged in the rotating signal omniselector.
Describedly unconventionally oppositely the method for wearing is comprised to step 5: when straight well is drilled into apart from horizontal well the second setpoint distance, straight well stops creeping into, and trips out inserting tube from horizontal well, and then straight well is crept into to horizontal well, until straight well and horizontal well are to wearing.
This second setpoint distance is 5m～15m.
A kind of rotating signal omniselector, comprise the housing of tubular, is provided with for the fixing instrument fixator of inserting tube the inwall fixed seal connection of this instrument fixator and housing in an end of housing.
Housing is provided with a plurality of strip through-holes.
This instrument fixator comprises successively retainer top, centralizer and the retainer bottom connected, retainer top and retainer bottom all with the inwall fixed seal connection of housing, be provided with the through hole for the inserting tube grafting in retainer top.
The invention has the beneficial effects as follows: this is unconventional oppositely to the method for wearing and rotating signal omniselector, can realize the old well of viscous crude field or waste water horizontal well are carried out to the fireflood transformation after, can play the effect of volume increase, synergy, re-using.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, to of the present invention, unconventionally oppositely the method for wearing and rotating signal omniselector are described in further detail.
Fig. 1 is this unconventional reverse work schematic diagram to the method for wearing.
Fig. 2 is the schematic diagram that the rotating signal omniselector is connected with drilling rod.
Fig. 3 is along the sectional view of A-A direction in Fig. 2.
Fig. 4 is the schematic diagram of instrument fixator.
1. horizontal wells wherein, 2. straight well, 3. well site, 4. inserting tube, 5. rotating signal omniselector, 6. strong magnetic short section, 7. drilling rod, 8. cable, 51. housings, 52. through holes, 53. installation cavitys, 54. retainer top, 55. centralizers, 56. retainer bottom, 57. fixator afterbodys.
The specific embodiment
Below in conjunction with accompanying drawing, to of the present invention, unconventionally oppositely the method for wearing and rotating signal omniselector are described in further detail.A kind of unconventional oppositely to the method for wearing, comprise the following steps:
Step 1: be provided for the well site 3 of drilling straight-hole 2 above the end of horizontal well 1, upper rig;
Step 2: when this straight well 2 is drilled into apart from this horizontal well 1 first setpoint distance, this straight well 2 stops creeping into;
Step 3: will deliver to the target location of this horizontal well 1 end for the inserting tube 4 that receives magnetic signal, and also can be called target position;
Step 4: the bottom to this straight well 2 is lowered to for launching the strong magnetic short section 6 of magnetic signal, inserting tube 4 can receive the magnetic signal that strong magnetic short section 6 sends and this signal is sent to control module, unconventional in this control module oppositely constantly revised the target spot data to wearing the characteristic signal that software can receive according to inserting tube 4, guide the drilling trace of this straight well 2 to this horizontal well 1 end target location, thereby for it successfully realizes unconventionally oppositely to wearing, providing data accurately and reliably, as shown in Figure 1.
Wherein, in step 2, this first setpoint distance is 80m～120m, preferred 100m, and it is in order to improve precision with strong magnetic short section 6 that straight well 2 is drilled into apart from being lowered to inserting tube 4 after this horizontal well 1 first setpoint distance again, guarantees that straight well 2 can be to wearing horizontal well 1.In step 3, with the drilling rod of workover rig, inserting tube 4 is delivered to the target location of this horizontal well 1 end.Specifically, workover rig on horizontal well, this workover rig is for carrying inserting tube 4 that power and drilling rod 7 are provided.
Because be producing well before horizontal well (old well), well has been lowered to screen casing (ferromagnetic material), and the magnetic signal that the strong magnetic short section 6 of working in straight well 2 is launched has shielding action, can produce magnetic disturbance simultaneously.So inserting tube 4 is arranged on as shown in Figures 2 and 3 in rotating signal omniselector 5, with anti-interference, reduce signal attenuation simultaneously, this rotating signal omniselector 5 is made for nonmagnetic substance.Inserting tube 4 is MGS(Magnetic Geosteering System) inserting tube, this inserting tube 4 is commercially available.The MGS inserting tube is arranged in rotating signal omniselector 5, drilling rod 7 and rotating signal omniselector 5 are coupled together, the mode of taking the cable punching to carry is transported to target position (to wearing position) with drilling rod by the MGS inserting tube, as shown in Figure 3, the cable 8 of inserting tube 4 is arranged in this drilling rod 7, and cable 8 is coaxial with drilling rod 7.The tradition mode of movement, because horizontal segment length's frictional resistance is large, affects the instrument receiving system and move in horizontal hole as inserting tube 4; And, due to cable 8 self tension force, can't confirm the accurate location of instrument receiving system in well, and can guarantee the accurate location of inserting tube 4 in well with cable punching mode of movement.
Describedly unconventionally oppositely the method for wearing is comprised to step 5: for fear of the MGS inserting tube in horizontal well 1 impaired when very near to wearing distance, when straight well 2 is drilled into apart from horizontal well 1 the second setpoint distance, straight well 2 stops creeping into, trip out inserting tube 4 from horizontal well 1, and then make straight well 2 according to oppositely to wearing software, the target spot data that provide are provided are continued to creep into to horizontal well 1, until straight well 2 with horizontal well 1 successfully to wearing, straight well 2 carries out completion practice again.Wherein, this second setpoint distance is 5m～15m, preferably 10m.
Interference for fear of ferromagnetic material in well to inserting tube 4, the present invention also provides a kind of rotating signal omniselector 5, this rotating signal omniselector 5 is to use in above-mentioned step 3, concrete, in step 3, inserting tube 4 is arranged in rotating signal omniselector 5, with the drilling rod of workover rig by rotating signal omniselector 5 with deliver to the target location of this horizontal well 1 end for the inserting tube 4 that receives magnetic signal.
Described rotating signal omniselector 5 comprises the housing 51 of tubular, installation cavity 53 is arranged in the right-hand member of housing 51, in installation cavity 53, be provided with for the fixing instrument fixator of inserting tube 4, the structure of this instrument fixator as shown in Figure 4, the inwall fixed seal connection of this instrument fixator and housing 51, as Fig. 2, shown in Fig. 3 and Fig. 4, the left end of this rotating signal omniselector 5 is fixedly connected with drilling rod 7, inserting tube 4 is arranged in rotating signal omniselector 5, what inserting tube 4 was similar match is shaft-like, inserting tube 4 comprises head and bar section, sensor mainly is arranged in the head of inserting tube 4, the bar section of inserting tube 4 is plugged in the instrument fixator of rotating signal omniselector 5, as shown in Figure 3.
Be provided with a plurality of strip through-holes 52 between the two ends of housing 51.Strip through-hole 52 is along the axial setting of housing 51, and the length direction of strip through-hole 52 is along the left and right directions in Fig. 2.The length of strip through-hole 52 is 1000mm～1500mm.The wide of strip through-hole 52 is 15mm～20mm, and when the bar section of inserting tube 4 is plugged in the instrument fixator of rotating signal omniselector 5, the position of the position of the head of inserting tube 4 and through hole 52 is to corresponding.Strip through-hole 52 is set like this and not only can makes housing 51 provide electromagnetic shielding for inserting tube 4, can also make the foreign material such as silt in this rotating signal omniselector 5 discharge from this through hole 52.
As shown in Figure 3 and Figure 4, this instrument fixator comprises columniform retainer bottom 56, the inwall fixed seal connection of retainer bottom 56 and housing 51.One end of retainer bottom 56 is provided with centralizer 55, and centralizer 55 is arranged in housing 51, and centralizer 55 is connected and fixed by key.Centralizer 55 is connected with columniform retainer top 54, and the inwall fixed seal connection of retainer top 54 and housing 51 is provided with the through hole of pegging graft for inserting tube 4 in retainer top 54.The other end of retainer bottom 56 is provided with columniform fixator afterbody 57.This instrument fixator comprises retainer top 54, centralizer 55, retainer bottom 56 and the fixator afterbody 57 connected successively, as shown in Figure 4.
The above, be only specific embodiments of the invention, can not limit the scope that invention is implemented with it, thus the displacement of its equivalent assemblies, or the equivalent variations of doing according to scope of patent protection of the present invention and modification, all should still belong to the category that this patent is contained.
Claims (10)
1. one kind unconventionally is characterized in that oppositely to the method for wearing, the described unconventionally oppositely method of wearing is comprised the following steps:
Step 1: the well site (3) that is provided for drilling straight-hole (2) in the top of the end of horizontal well (1);
Step 2: when this straight well (2) is drilled into apart from this horizontal well (1) first setpoint distance, this straight well (2) stops creeping into;
Step 3: will deliver to for the inserting tube (4) that receives magnetic signal the target location of this horizontal well (1) end;
Step 4: the bottom to this straight well (2) is lowered to for launching the strong magnetic short section (6) of magnetic signal, and this straight well is crept into to the target location of this horizontal well (1) end.
2. according to claim 1 unconventional oppositely to the method for wearing, it is characterized in that: in step 2, this first setpoint distance is 80m～120m.
3. according to claim 1 unconventional oppositely to the method for wearing, it is characterized in that: in step 3, with the drilling rod of workover rig, inserting tube (4) is delivered to the target location of this horizontal well (1) end.
4. according to claim 3 unconventional oppositely to the method for wearing, it is characterized in that: the cable of inserting tube (4) is arranged in this drilling rod.
5. according to claim 1 unconventional oppositely to the method for wearing, it is characterized in that: inserting tube (4) is the MGS inserting tube, and inserting tube (4) is arranged in rotating signal omniselector (5).
6. according to claim 1 unconventional oppositely to the method for wearing, it is characterized in that: describedly unconventionally oppositely the method for wearing is comprised to step 5: when straight well (2) is drilled into apart from horizontal well (1) the second setpoint distance, straight well (2) stops creeping into, trip out inserting tube (4) from horizontal well (1), and then straight well (2) is crept into to horizontal well (1), until straight well (2) and horizontal well (1) are to wearing.
7. according to claim 1 unconventional oppositely to the method for wearing, it is characterized in that: this second setpoint distance is 5m～15m.
8. a rotating signal omniselector, it is characterized in that: described rotating signal omniselector comprises the housing (51) of tubular, be provided with for the fixing instrument fixator of inserting tube (4) the inwall fixed seal connection of this instrument fixator and housing (51) in one end of housing (51).
9. rotating signal omniselector according to claim 8, it is characterized in that: housing (51) is provided with a plurality of strip through-holes (52).
10. rotating signal omniselector according to claim 8, it is characterized in that: this instrument fixator comprises retainer top (54), centralizer (55) and the retainer bottom (56) connected successively, retainer top (54) and retainer bottom (56) all with the inwall fixed seal connection of housing (51), be provided with the through hole of pegging graft for inserting tube (4) in retainer top (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310403820.0A CN103470237B (en) | 2013-09-06 | 2013-09-06 | Unconventional oppositely to the method for wearing and rotating signal omniselector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310403820.0A CN103470237B (en) | 2013-09-06 | 2013-09-06 | Unconventional oppositely to the method for wearing and rotating signal omniselector |
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| Publication Number | Publication Date |
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| CN103470237A true CN103470237A (en) | 2013-12-25 |
| CN103470237B CN103470237B (en) | 2016-04-06 |
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| CN201310403820.0A Expired - Fee Related CN103470237B (en) | 2013-09-06 | 2013-09-06 | Unconventional oppositely to the method for wearing and rotating signal omniselector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894780A (en) * | 2017-03-14 | 2017-06-27 | 天津森特聚尔新能源技术有限公司 | A kind of docking of L-type well magnetic steering inserting tube conveying device and docking calculation |
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| US20090178850A1 (en) * | 2004-11-30 | 2009-07-16 | General Electric Company | Method and system for precise drilling guidance of twin wells |
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| Publication number | Publication date |
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| CN103470237B (en) | 2016-04-06 |
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