Cluster well casing batch drilling speed increasing method

Abstract

The invention discloses a cluster well casing batch drilling speed increasing method, which relates to the technical field of oil exploration and development, and comprises the following steps of: integrally carrying drilling machine main body equipment, shared living facilities and spare parts to a drilling site; two drilling machines of the same model are arranged on the shale gas platform; after drilling of the water base section of one directional well is completed, moving between the two wells is conducted, and drilling of the water base section of the next directional well is conducted till drilling of the water base sections of all the directional wells is completed; after drilling of the water base sections of all the directional wells is completed, drilling of the oil base section of one directional well is carried out, moving between two wells is carried out, and drilling of the oil base section of the next directional well is carried out until drilling of the oil base sections of all the directional wells is completed; and after drilling is completed, the drilling machine main body equipment is moved away from the drilling site. According to the invention, full sharing of equipment, sharing of drilling fluid and sharing of drilling parameters can be realized, and drilling speed increase and cost reduction are realized; the completion period is reduced by 20.81%, the loading period is reduced by 20.97%, and the oil testing period is reduced by 12.14% on year-on-year basis.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum exploration and development, and in particular to a cluster well casing moving batch drilling speed-up method. Background Art

[0002] With the development and maturity of directional drilling technology, due to the limitations of drilling sites and the convenience of centralized production and transportation management, platform cluster well layout design is increasingly commonly used at oil drilling sites. However, some problems are exposed in the process of matching multiple drilling rigs on one platform and drilling platform cluster wells in sequence.

[0003] In view of the technical difficulties in speeding up, improving and optimizing the cluster well drilling platform, and the lack of speed-up methods, it is necessary to find a method to "optimize the platform as a package" for multiple machines, optimize different sections of the wells after drilling multiple wells on the platform, and adopt a segmented drilling method to increase the drilling speed, ensure the safety of the well and equipment, and achieve the goal of speeding up, increasing efficiency and scientific drilling. Summary of the invention

[0004] The present invention provides a cluster well set casing moving batch drilling speed-up method, which is currently leading in the industry. Compared with the same type of single speed-up method, the technical means and solutions are systematic, the methods are more abundant, and are comprehensive, unique, practical and operable.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] The method for increasing the speed of cluster wellbore casing transfer batch drilling comprises the following steps:

[0007] Step 1: Move the main equipment of the drilling rig, shared living facilities and spare parts to the drilling site as a whole;

[0008] Step 2: Install two drilling rigs of the same model on the shale gas platform;

[0009] Step 3: After the water-based section of a directional well is drilled, the connection between the main equipment of the drilling rig and other equipment is disassembled, and the main equipment of the drilling rig is moved to the next well as a whole by the translation device, so as to realize the "relocation" of the main equipment of the drilling rig, complete the movement between the two wells, and start the water-based section drilling of the next directional well, until the water-based section drilling of all directional wells is completed;

[0010] Step 4: After the water-based section drilling of all directional wells is completed, the oil-based section drilling of one directional well is carried out. After the oil-based section drilling of one directional well is completed, the connection between the main equipment of the drilling rig and other equipment is disassembled, and the main equipment of the drilling rig is moved to the next well as a whole by the translation device, so as to realize the "travel" of the main equipment of the drilling rig, complete the movement between the two wells, and then start the oil-based section drilling of the next directional well, until the oil-based section drilling of all directional wells is completed;

[0011] Step 5: After drilling is completed, move the main equipment of the drilling rig away from the drilling site.

[0012] Preferably, in step 2, multiple directional wells are arranged in two rows on the shale gas platform, and the spacing between directional wells in the same row is 5m; and a drilling rig is arranged on each of the multiple directional wells arranged in the two rows.

[0013] Preferably, in step 2, the drilling rig is installed on the middle well of multiple directional wells in the same row as the first well to be drilled.

[0014] Preferably, in step 2, the translation guide rail is installed before installing the drilling rig, and the drilling rig is placed and installed on the translation guide rail.

[0015] Preferably, in step 2, the drilling rig is a mechanical drilling rig or an electric drilling rig.

[0016] Preferably, in step three, drilling the water base section of a directional well includes sequentially drilling the casing, the first opening, and the second opening.

[0017] Preferably, in the step three, different drilling tool combinations are used in the drilling of the guide tube, the first drilling and the second drilling process.

[0018] Preferably, in step 4, drilling the oil base section of a directional well includes sequentially performing three openings and completion drilling.

[0019] Preferably, in step 4, different drilling tool combinations are used in the three-opening and final drilling processes.

[0020] Preferably, in step three and step four, the translation device includes a hydraulic cylinder, a rod end of the hydraulic cylinder is connected to a pawl device, and a cylinder end is connected to the drilling platform base in turn, the pawl on the pawl device cooperates with the groove on the translation guide rail to realize the longitudinal positioning of the hydraulic cylinder, the drilling platform base and the derrick base are connected by square tube tie bars, the square tube tie bars include a square tube and ear seats respectively provided at both ends thereof for connecting to the derrick base, and two ear seats provided in the middle for connecting to the drilling platform base, the derrick base and the drilling platform base are respectively provided with ear seats connected to the corresponding ear seats on the square tube by pins.

[0021] The translation guide rail comprises at least two sections connected by ear plates and pins, each section of the translation guide rail has a length of 5000 mm and a height of 355 mm, and each section of the translation guide rail is provided with a continuous notch.

[0022] The beneficial effects of this technical solution are as follows:

[0023] 1. The present invention provides a cluster well set casing moving batch drilling speed-up method, which can realize full sharing of equipment, drilling fluid, and drilling parameters, thereby realizing drilling speed-up and cost reduction; achieving a 20.81% reduction in the intermediate completion cycle, a 20.97% reduction in the moving and installation cycle, and a 12.14% reduction in the oil test cycle year-on-year.

[0024] Second, the present invention provides a cluster well set set moving batch drilling speed-up method, which can realize the interchange of equipment, reduce maintenance time and improve the utilization rate of platform equipment; can reduce the spare parts storage and maintenance logistics costs; the translation technology can realize the rapid relocation of the platform cluster in the same well section, reducing the relocation cycle; the translation base drilling rig time is 3-4 hours; the water-based section and the oil-based section are switched, saving 5-6 days of drilling tool and top drive time; can realize the sharing of the mud system in the same layer, saving the time of switching the mud system configuration, tank cleaning and parts replacement, and the time and cost of vehicle mud transportation, reducing the mid-to-completion cycle;

[0025] 3. The present invention provides a cluster well set set moving batch drilling speed-up method, which can realize the sharing of drilling tool combination technology and tool reserve; sharing of drill bit selection, optimizing drill bit control cost and improving efficiency; sharing of downhole tools and material reserves, saving transportation and material costs; sharing of advance preventive measures for complex well sections; and sharing of platform drilling parameters and technical reference, and taking effective measures in advance to avoid drill sticking and downhole complexity and reduce processing time; because the distance between wells on the same platform is only a few meters: reference is made in drill bit selection, time and drilling parameters; early warning can be given and preventive measures can be formulated in a targeted manner, and risk avoidance plans can be formulated to reduce the risks of drill sticking and complex processing, thereby saving time and realizing drilling speed-up.

[0026] Instruction Manual

[0027] Figure 1 It is the layout diagram of the electric drilling rig;

[0028] Figure 2 It is the layout diagram of the mechanical drilling rig;

[0029] Figure 3 is a schematic diagram of the structure of the translation device;

[0030] Figure 4 This is a schematic diagram of a specific drilling construction plan in Example 2; Figure 5 This is a schematic diagram of the well depth structure of Example 2;

[0031] Among them: 100, translation device; 101, hydraulic cylinder; 102, ratchet device; 200, translation guide rail; 300, drilling platform base; 400, derrick base. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0033] Example 1

[0034] The method for increasing the speed of cluster wellbore casing transfer batch drilling comprises the following steps:

[0035] Step 1: Move the main equipment of the drilling rig, shared living facilities and spare parts to the drilling site as a whole;

[0036] Step 2: Install two drilling rigs of the same model on the shale gas platform;

[0037] Step 3: After the water-based section drilling of a directional well is completed, the connection between the main equipment of the drilling rig and other equipment is disassembled, and the main equipment of the drilling rig is moved to the next well as a whole by the translation device 100, so as to realize the "overlapping movement" of the main equipment of the drilling rig, complete the movement between the two wells, and enter the water-based section drilling of the next directional well, until the water-based section drilling of all directional wells is completed;

[0038] Step 4: After the water-based section drilling of all directional wells is completed, the oil-based section drilling of one directional well is carried out. After the oil-based section drilling of one directional well is completed, the connection between the main equipment of the drilling rig and other equipment is disassembled, and the main equipment of the drilling rig is moved as a whole to the next well by the translation device 100, so as to realize the "travel" of the main equipment of the drilling rig, complete the movement between the two wells, and enter the oil-based section drilling of the next directional well, until the oil-based section drilling of all directional wells is completed;

[0039] Step 5: After drilling is completed, move the main equipment of the drilling rig away from the drilling site.

[0040] Among them, in the step 2, multiple directional wells are arranged in two rows on the shale gas platform, and the spacing between the directional wells in the same row is 5m; and a drilling rig is set on each of the multiple directional wells arranged in the two rows.

[0041] Among them, in the step 2, the drilling rig is installed on the middle well of multiple directional wells in the same row as the first drilling well.

[0042] Preferably, in step 2, the translation guide rail 200 is installed before installing the drilling rig, and the main equipment of the drilling rig is placed and installed on the translation guide rail 200.

[0043] Wherein, in the step 2, the drilling rig is a mechanical drilling rig or an electric drilling rig.

[0044] Among them, in the step three, the drilling of the water base section of a directional well includes drilling the casing, the first opening, and the second opening in sequence.

[0045] Among them, in the step three, different drilling tool combinations are used in the drilling of the guide tube, the first drilling and the second drilling process.

[0046] Among them, in the step 4, drilling the oil base section of a directional well includes three openings and completion drilling in sequence.

[0047] Among them, in the step 4, different drilling tool combinations are used in the three-opening and completion drilling processes.

[0048] like Figure 3 As shown, in the step 3 and step 4, the translation device 100 includes a hydraulic cylinder 101, the rod end of the hydraulic cylinder 101 is connected to the pawl device 102, and the cylinder end is connected to the drilling platform base 300 in turn, the pawl on the pawl device 102 cooperates with the notch on the translation guide rail 200 to realize the longitudinal positioning of the hydraulic cylinder 101, the drilling platform base 300 and the derrick base 400 are connected by square tube tie bars, the square tube tie bars include square tubes and ear seats respectively provided at both ends thereof for connecting to the derrick base 400, and two ear seats provided in the middle for connecting to the drilling platform base 300, and the derrick base 400 and the drilling platform base 300 are respectively provided with ear seats connected to the corresponding ear seats on the square tube through pins. The translation guide rail 200 includes at least two sections connected by ear plates and pins, each section of the translation guide rail 200 is 5000 mm long and 355 mm high, and each section of the translation guide rail 200 is provided with continuous notches.

[0049] Example 2

[0050] A cluster well in Weiyuan also adopts the cluster well set moving batch drilling speed-up method described in Example 1. A cluster well in Weiyuan includes 10 directional wells, and the 10 directional wells are arranged in two rows, one row is directional well No. 1, directional well No. 2, directional well No. 3, directional well No. 4 and directional well No. 5; the other row is directional well No. 6, directional well No. 7, directional well No. 8, directional well No. 9 and directional well No. 10; two drilling rigs are moved to directional well No. 3 and directional well No. 8 respectively; and two sections of translation guide rails 200 are installed on the left and right sides of directional well No. 3 and directional well No. 8; the well depth structure design data of the 10 directional wells are shown in Tables 1 to 10.

[0051] Table 11 Well depth structure design data table for directional well

[0052]

[0053] Table 22 Well depth structure design data table for directional well

[0054]

[0055] Table 33 Well depth structure design data table for directional well

[0056]

[0057]

[0058] Table 44 Well depth structure design data table for directional well

[0059]

[0060] Table 55 Well depth structure design data table for directional well

[0061]

[0062] Table 66 Well depth structure design data table for directional well

[0063]

[0064] Table 77 Well Depth Structure Design Data Table of Directional Well No.

[0065]

[0066]

[0067] Table 88 Well Depth Structure Design Data Table of Directional Well

[0068]

[0069] Table 99 directional well depth structure design data table

[0070]

[0071] Table 1010 directional well depth structure design data table

[0072]

[0073] Different drilling tool combinations are used for drilling the guide tube, the first opening, the second opening and the third opening respectively. The specific drilling tool combinations are shown in Tables 11 to 14.

[0074] Table 11 Drilling tool assembly data table used for drilling guide pipe

[0075]

[0076] Table 12: Drilling tool combination data table used in the first opening

[0077]

[0078] Table 13 Drilling tool combination data table for the second opening

[0079]

[0080]

[0081] Table 14 Drilling tool combination data table for the third opening

[0082]

[0083] The drilling rig can be a mechanical drilling rig or an electric drilling rig; the plan layout diagram when using a mechanical drilling rig is as follows: Figure 2 As shown, the main equipment of the drilling rig includes a mechanical drilling rig, a mud pump, a machine room, an air source room and a power distribution room. The main equipment of the drilling rig is moved to the next well as a whole by the translation device 100, so as to realize the "set movement" of the main equipment of the drilling rig and complete the movement between the two wells. The selection of drilling rigs and the main equipment of drilling are shown in Table 15.

[0084] Table 15 Drilling rig selection and main drilling equipment parameters

[0085] Serial number Equipment or part name Specifications Main parameters unit quantity one Drilling Rig ZJ70 7000 m 1 set 1 Derrick JJ450 / 45 / K6 4500 kN 1 set 2 Base DZ450 / 10.5 4500 kN 1 set 3 winch JC70 1470 kW 1 set 4 Overhead Crane TC-450-Ⅱ 4500 kN 1 set 5 Traveling block / hook YC-450 4500 kN 1 set 6 Faucet SL-450-Ⅱ 4500 kN 1 set 7 Turntable ZP-375 4500 kN 1 set 8 diesel engine G12V190PZLG-3 810 kW 4 units 9 dynamo TAD1631GF 400 kW 2 units 10 SCR or VFD control system 1 set 11 Mechanical transmission BC1600 / 4 1 set 12 Drilling pump F-1600 1600 HP 3 units 13 Circulation tank 8.5×2.6×2.4 40 m3 5 units 14 Vibrating screen GX-1 210 m3 / h 3 units 15 Vacuum Degasser ZCQ1.5 / 5 240 m3 / h 1 unit 16 Sand and mud removal machine ZQJ-1 200 m3 / h 1 unit 17 Priming pump set 2 sets 18 Centrifuge JL40-DZ / 45kw 1 set 19 Centrifuge LW355-1250N / 30KW 1 set 20 Weighted pump, mixing funnel 150NSP 55 kW 2 sets 21 Liquid-gas separator SB1-3×4-J 1 MPa 1 set 22 Electric air compressor SPE-306X 1 MPa 2 units 23 Drilling parameter instrument 1 set

[0086] The density design parameters of the drilling fluid used in the drilling rig are shown in Table 16.

[0087] Table 16 Drilling fluid density design parameters

[0088]

[0089] The well depth structure in this embodiment is as follows Figure 5 shown.

[0090] The properties of the drilling fluid used in the drilling rig and the maintenance and treatment measures are shown in Tables 17 to 19.

[0091] Table 17 Performance and maintenance measures of the pipe and drilling fluid

[0092]

[0093] Table 18 Secondary drilling fluid performance and maintenance measures

[0094]

[0095]

[0096] Table 19 Performance and maintenance measures of drilling fluid in three-well drilling

[0097]

[0098] The drilling rig in this embodiment is also an electric drilling rig. The plan layout diagram when using an electric drilling rig is as follows: Figure 1 As shown, the main equipment of the drilling rig includes an electric drilling rig, a cable trough and an electric control room. The main equipment of the drilling rig is moved as a whole to the next well through the translation device 100, realizing the "nested movement" of the main equipment of the drilling rig and completing the movement between the two wells.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A cluster wellbore casing moving batch drilling speed-up method, characterized in that: The following steps are involved: Step 1: Move the main equipment of the drilling rig, shared living facilities and spare parts to the drilling site as a whole; Step 2: Install two drilling rigs of the same model on the shale gas platform; Step 3: After the water-based section of a directional well is drilled, the connection between the main equipment of the drilling rig and other equipment is disassembled, and the main equipment of the drilling rig is moved to the next well as a whole by the translation device, so as to realize the "relocation" of the main equipment of the drilling rig, complete the movement between the two wells, and start the water-based section drilling of the next directional well, until the water-based section drilling of all directional wells is completed; Step 4: After the water-based section drilling of all directional wells is completed, the oil-based section drilling of one directional well is carried out. After the oil-based section drilling of one directional well is completed, the connection between the main equipment of the drilling rig and other equipment is disassembled, and the main equipment of the drilling rig is moved to the next well as a whole by the translation device, so as to realize the "relocation" of the main equipment of the drilling rig, complete the movement between the two wells, and then start the oil-based section drilling of the next directional well, until the oil-based section drilling of all directional wells is completed; Step 5: After drilling is completed, move the main equipment of the drilling rig away from the drilling site.

2. The cluster well casing moving batch drilling speed-up method according to claim 1 is characterized by: In the step 2, multiple directional wells are arranged in two rows on the shale gas platform, and the spacing between the directional wells in the same row is 5m; a drilling rig is set on each of the multiple directional wells arranged in the two rows.

3. The cluster well casing moving batch drilling speed-up method according to claim 2 is characterized by: In the step 2, the drilling rig is installed on the well in the middle of the multiple directional wells in the same row as the first well to be drilled.

4. The cluster well casing moving batch drilling speed-up method according to claim 3 is characterized by: In the step 2, the translation guide rail is installed before installing the drilling rig, and the drilling rig is placed and installed on the translation guide rail.

5. The cluster well casing moving batch drilling speed-up method according to claim 4 is characterized in that: In the step 2, the drilling rig is a mechanical drilling rig or an electric drilling rig.

6. The cluster well casing moving batch drilling speed-up method according to claim 5 is characterized by: In the step 3, the drilling of the water base section of a directional well includes sequentially drilling the casing, the first opening, and the second opening.

7. The cluster well casing moving batch drilling speed-up method according to claim 6 is characterized by: In the step three, different drilling tool combinations are used in the drilling of the guide tube, the first drilling and the second drilling process.

8. The cluster well casing moving batch drilling speed-up method according to claim 7 is characterized in that: In the step 4, drilling the oil base section of a directional well includes sequentially performing three openings and completing the drilling.

9. The cluster well casing moving batch drilling speed-up method according to claim 8 is characterized by: In the step 4, different drilling tool combinations are used in the three-opening and final drilling processes.

10. The cluster well casing moving batch drilling speed-up method according to claim 1 is characterized by: In step three and step four, the translation device includes a hydraulic cylinder, the rod end of the hydraulic cylinder is connected to the pawl device, and the cylinder end is connected to the drilling platform base in turn, the pawl on the pawl device cooperates with the groove on the translation guide rail to realize the longitudinal positioning of the hydraulic cylinder, the drilling platform base and the derrick base are connected by square tube tie bars, the square tube tie bars include a square tube and ear seats respectively provided at both ends of the square tube for connecting to the derrick base, and two ear seats provided in the middle for connecting to the drilling platform base, the derrick base and the drilling platform base are respectively provided with ear seats connected to the corresponding ear seats on the square tube by pins.

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