Bit feed tool
A technology for sending drilling tools and drilling fluids, which is applied in earthwork drilling, rotary drilling rigs, drilling compositions, etc., can solve the problems of increased drilling costs, large drilling fluid consumption, and narrow formation fracture pressure window, etc. Small avalanche, good fluid loss control and rheology, reduced generation effect
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Embodiment 1
[0032] Such as figure 1 As shown, a drilling tool includes a drilling fluid chamber 2 arranged inside the sleeve and connected to the upper cylinder 1, the drilling fluid chamber 2 is connected with a piston chamber 3, the piston chamber 3 is connected with the driving chamber, and the middle part of the driving chamber is provided with The driving rod 8 is connected with the rotating part 12, and the rotating part 12 is connected with the lower joint 11. A nozzle 14 is provided at the bottom of the drilling fluid chamber 2, and the nozzle 14 communicates with the piston chamber. The piston chamber 3 is provided with a piston head, and the middle part of the piston head is provided with a liquid flow hole; the two sides of the piston chamber are provided with a number of partition rings 4, and the interior of the partition ring 4 is provided with a diversion hole 5, and the diversion hole 5 passes through the side of the sleeve The wall communicates with the outside world; th...
Embodiment 2
[0034] Drilling fluid chamber 2 is filled with drilling fluid, which includes 12-25 parts by mass of terpene-based polyester, 18-26 parts of skeleton type diarylene polymer, 8-15 parts of nano-Na 2 SiO 3, 3-8 parts of polyoxypropylene glycol, 5-13 parts of didecyltrimethylammonium chloride, 30-45 parts of polyethylene glycol, 30-45 parts of ethanol and 40-80 parts of bentonite, skeleton type The structural formula of diarylene polymer is The degree of polymerization of the backbone type diarylene polymer is greater than 6. Nano Na 2 SiO 3 The particle size of bentonite is 20nm ~ 80nm, and the fineness of bentonite is 200 mesh. The present invention provides 8 preferred combination ratios, and tested its density at 15°C, 0°C, -4°C, and -8°C -1 ), static shear force k (Pa), plastic viscosity n (mPa s), dynamic shear force q (Pa) and API fluid loss m (mL), and the detailed data of hydrate inhibition test are shown in Table 1 to Table 3.
[0035] Table 1 preferred component...
Embodiment 3
[0042] Skeleton Diarylene Polymer The synthetic formula is as follows,
[0043]
[0044] Intermediate Cl-DTE synthesis: under the protection of argon, 16g (94mmol) glutaryl chloride was dissolved in 200mLCH 2 Cl 2 30 g (225.6 mmol) of anhydrous aluminum chloride was added, and 100 mL of a dichloroethane solution containing 25 g (188 mmol) of 5-chloro-2-methylthiophene was slowly added dropwise, and the reaction was continued for 8 h. Add 50 mL to terminate the reaction, and recrystallize with 95% aqueous ethanol.
[0045] Under the protection of argon, take 34.56g of zinc powder and put it into 200mL of tetrahydrofuran after re-distillation, and inject TiCl 4 17.16mL, after stirring evenly, heat to reflux for 1h. Under the condition of avoiding light, 200 mL of THF solution containing 11 g of the above product was added dropwise into the flask within 24 h, the reaction was continued for 12 h, and 50 mL of saturated potassium carbonate aqueous solution was added to term...
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Abstract
Description
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