Oil base drilling fluid fracture leakage stoppage formula
An oil-based drilling fluid and leakage technology, applied in the directions of drilling compositions, chemical instruments and methods, etc., can solve the problems of poor crack plugging and pressure-bearing effect, not well solved, easy agglomeration and poor dispersion effect, etc. , to achieve the effect of improving the success rate of plugging, high compressive strength and good dispersion performance
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[0020] Example 1:
[0021] This embodiment provides a drilling fluid fracture-type leakage plugging formula, including component A and component B. The component A is composed of fiber materials with a diameter of 0.01 mm to 1.00 mm and a length of 0.50 cm to 10.00 cm. The B component is composed of different lipophilic rigid particulate materials.
[0022] The oil-based drilling fluid crack-type leakage plugging formula plugging principle of the present invention is to use a series of fiber materials (component A) for oil-based drilling fluid plugging to form a fast water loss plugging layer in the oil-based drilling fluid leakage crack channel, and then The lipophilic rigid particulate material (component B) enters the plugging layer to block and restrict penetration. The two components A and B have the synergistic effect of plugging and controlling leakage. The oil-based drilling fluid fracture-type leakage plugging formula can significantly improve the success rate of oil-base...
Example Embodiment
[0023] Example 2:
[0024] On the basis of Example 1, 20 parts of fibers with a diameter of 0.01 mm, 30 parts of fibers with a diameter of 0.05 mm, and 50 parts of a fiber with a diameter of 0.50 mm are put in a mixing equipment for uniform mixing to obtain the oil-based drilling fluid crack-type leakage plugging Formulation A component.
[0025] The fiber material used in this embodiment is one or more of modified wood fiber, polypropylene fiber, multi-block polyurethane elastic fiber, and polybutylene terephthalate fiber.
[0026] Put 30 parts of organic soil, 20 parts of 1250 mesh talc powder, 30 parts of 2500 mesh talc powder, and 20 parts of 7-40 nanometer hydrophobically modified silica in a mixing equipment for uniform mixing to obtain the oil-based drilling fluid crack type Loss and plugging formula B component.
Example Embodiment
[0027] Example 3:
[0028] Put 15 parts of fibers with a diameter of 0.01mm, 20 parts of fibers with a diameter of 0.05mm, 35 parts of fibers with a diameter of 0.50mm, and 30 parts of a fiber with a diameter of 0.70mm in a mixing equipment for uniform mixing to obtain the oil-based drilling fluid crack-type leakage plugging formula A component. The fibers used are one or more of modified wood fibers, polypropylene fibers, multi-block polyurethane elastic fibers, and polybutylene terephthalate fibers.
[0029] Put 30 parts of organic soil, 20 parts of 1250 mesh talc powder, 30 parts of 2500 mesh talc powder, and 20 parts of 7-40 nanometer hydrophobically modified silica in a mixing equipment for uniform mixing to obtain the oil-based drilling fluid crack type Loss and plugging formula B component.
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