Anton Bailin Oilfield Technologies (beijing) Co., Ltd.

Anton Bailin Oilfield Technologies Co., Ltd.

Anton Bailin Oilfield Technology (beijing) Co., Ltd

Bailin Pei

Yong Qing Xue

Songmei Zhang

Feng Zhang

Hailong Wang

Jianchang Wu

Shusheng Li

Guojiang Feng

Yong Xue

A method for filling an oil and gas well of a fractured oil and gas reservoir with pack-off particles to reduce water and increase oil production comprises the following steps: (1) injecting a filling liquid carrying pack-off particles into a wellbore and a fracture via a wellhead, until a stratum crack/fracture extension pressure is reached or exceeded, or until an injection amount per unit injection pressure is close to zero, or until a preset filling amount of pack-off particles is reached; (2) launching production.

Method for filling oil-gas well of fractured oil-gas reservoir with isolation particles to reduce water and increase oil production

A method and a system for segmental flow control in an oil-gas well are disclosed. The oil-gas well includes a first annular space () and a second annular space (). The first annular space () is formed with the space between the borehole wall () of the oil-gas well and a perforated tube () which is in the oil-gas well and extends along an axial direction of the oil-gas well; The second annular space () which is formed with the space between the perforated tube () and a flow-control filter string () which is in the perforated tube () and extends along the axial direction of the oil-gas well. The method includes filling anti-channeling isolating particles () in the first annular space () and the second annular space () to enable fluid to flow in the first annular space () and the second annular space () filled with the anti-channeling isolating particles () in the manner of seepage.

Method and system for segmental flow control in oil-gas well

An oil-gas well structure and a segmental flow-control method for a flow-control filter string () used in the oil-gas well. The segmental flow-control method for the flow-control filter string () comprises the following steps: 1) establishing a channel (-); 2) running the flow-control filter string (); 3) filling with the anti-channeling flow pack-off particles (); 4) sealing; 5) disconnecting a run-in string connected to the flow-control filter string (). The segment flow control of the flow-control filter string () is achieved by using a pack-off effect of the anti-channeling flow pack-off particles ().

Segmental flow control method and apparatus for a flow control filter string in an oil-gas well

Anti-channeling pack-off particles used in a production section of an oil-gas well, a completion method, and a production method are provided. The anti-channeling pack-off particles are macromolecule polymer particles having an average particle diameter of 0.05-1.0 mm and a real density of 0.8-1.4 g/cm. The particles are compactly filled into a space of the oil-gas well, which is required to be filled and packed off so that there is no channeling path after filling, thus effectively pack-off or sectioning the oil-gas well into multiple, relatively independent regions for production from the oil-gas well, and thus improving the production efficiency of the oil-gas well. Even if a channeling path occurs, a very small flow of channeling fluid of a carrier medium will move some of the anti-channeling pack-off particles in a direction towards the channeling path and accumulate those particles until the channeling path is filled, thereby achieving favorable effects of anti-channeling, packing-off, and sectional flow control.

Anti-channeling pack-off particles used in a production section of an oil-gas well, and completion method and production method using such particles

A segmental flow-control method for a flow-control filter string in an oil-gas well and an oil-gas well structure are disclosed. The oil-gas well includes a well wall(), a casing() located in the well wall(), a cement sheath() provided between the casing() and the well wall(), channeling path() existing outside the casing(), and a plurality of perforated tunnels () passing through the casing(), the cement sheath() and/or the channeling path() and into a formation from the inside of the casing to the formation. The segmental flow-control method for the flow-control filter string() includes the following steps: running the flow-control filter string() into the casing, wherein the flow-control filter string() is provided with a flow-control filter (), and an annular space is at least partially formed between the flow-control filter string() and the casing(); injecting a particle-carrying liquid carrying anti-channeling flow pack-off particles into the annular space through a particle-carrying liquid injecting passage, thus the particle-carrying liquid carries the anti-channeling flow pack-off particles into the annular space, and enters the channeling path() through the perforated tunnels(); and sealing the particle-carrying liquid injecting passage or closing a communicating part between the particle-carrying liquid injecting passage and the annular space.

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Beijing, China

Bailin Pei