A bolus injection system and application method of remote control temporary plugging material

Abstract

The invention discloses a bolus injection system and an application method of a remote-controlled temporary plugging material. The remote-controlled temporary plugging material bolus device includes a temporary plugging agent bolus injection system, a temporary plugging agent storage system and a pressure isolation system, which are mainly used for bolus injection of the temporary plugging agent and the temporary plugging ball into the high-pressure manifold, to avoid the The temporary plugging agent cannot enter the manifold smoothly because its own gravity is not enough to overcome the resistance. The device of the invention adopts remote control operation, and relies on electronically controlled hydraulic power to control the temporary plugging agent bolus system and the switch pressure isolation system, so as to avoid the problem of construction personnel crossing high-pressure areas to ensure the safety of on-site construction personnel and avoid possible high-pressure punctures. leakage damage. The blasthole temporary plugging agent and temporary plugging balls that are continuously injected into the high-pressure manifold by the pump are realized, which greatly improves the continuity of the temporary plugging and fracturing construction, shortens the construction time and reduces the construction cost.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field fracturing reservoir reconstruction and oil and gas stimulation, and in particular relates to a remote-controlling temporary plugging agent push injection device. Background technique [0002] With the depletion of conventional oil and gas resources, unconventional oil and gas resources such as shale gas and tight sandstone gas have gradually become the key areas of exploration and development. Due to the diversity and complexity of geological structure in unconventional reservoirs, strong heterogeneity and large difference in formation cracking pressure, in multi-cluster fracturing process, it is difficult to achieve effective opening of the whole cluster, and some perforation clusters are not fully open. fully remodeled. Mechanical isolation tools such as bridge plugs are often used in the field. However, due to large-scale fracturing, multiple tripping tools and crustal movement, cas...

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Problems solved by technology

However, this patent cannot effectively isolate the liquid from flowing back into the temporary plugging material storage system, which may cause the temporary plugging material to become sticky and swell when it encounters water before it is put into use; in addition, this patent cannot be used for temporary plugging balls, temporary plugging agents, etc. at the same time. The online injection and delivery of various temporary blocking materials cannot solve the problem of multiple delivery methods of online delivery devices in the existing market

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