5results about How to "Improve fracturing effect" patented technology

This invention discloses a sterically hindered hydrophilic nano-silica, its preparation method, and its applications, belonging to the field of shale oil and gas storage modification and production enhancement technology. The sterically hindered hydrophilic nano-silica is modified with ethylene oxide and aniline. The nano-silica has a particle size of 2-5 nm, the mass percentage of ethylene oxide to nano-silica is 1.5-3:1, and the mass percentage of aniline to nano-silica is 0.8-3:1. The prepared hydrophilic nano-silica can be used in the preparation of reagents to reduce fracturing fluid damage. This hydrophilic nano-silica competes with polymers for adsorption, reducing polymer adsorption blockage and thus reducing fracture damage.

A method and system for optimizing the design and fracturing scheme of shale gas horizontal wells, belonging to the field of oil and gas field development, includes: multi-source data collection and preprocessing; multi-source data fusion to generate a high-precision three-dimensional geological model; establishing reservoir attribute models and natural fracture models respectively, and predicting the activity of natural fractures; evaluation of geological engineering parameters, evaluation of vertical and horizontal sweet spots, and well location deployment; drilling / fracturing geological design; fracturing site tracking and post-fracturing production effect evaluation; using numerical simulation technology to predict the degree of shale gas horizontal well stimulation and gas well productivity, and continuously adjusting and optimizing the shale gas horizontal well design and fracturing optimization scheme based on the prediction results and feedback from actual production data. This invention has the advantages of high accuracy and reliability in reservoir evaluation, while reducing construction risks and improving development results; it also improves the productivity and economic benefits of shale gas horizontal wells.

The application discloses a shale oil horizontal well microseismic fracture parameter interpretation prediction method, and steps are as follows: step (1), microseismic fracture parameter interpretation prediction data preparation, determining the principle of parameter screening, and collecting the data of the screened parameters; step (2), data preprocessing; step (3), fracture parameter influence factor screening; step (4), regression prediction model construction; step (5), regression prediction model verification and evaluation; and step (6), application of the regression prediction model. The application has the following beneficial effects: 1. two modeling methods are used to establish a shale oil fracturing fracture parameter prediction model, and quantitative prediction of microseismic fracture parameters is realized; 2. high accuracy; 3. as a basis for shale oil horizontal well design, the application can optimize construction scale and design parameters, and also can provide a diagnosis method for fracturing construction, timely adjustment of construction parameters and improvement of fracturing reconstruction effect.

This invention discloses a composite temporary plugging agent suitable for different temperature gradients and its preparation method, belonging to the field of oil and gas field development technology. The composite temporary plugging agent comprises the following components by mass parts: silica sand: 2-4 parts; glass microspheres: 8-10 parts; alkaline solution: 1-3 parts; silane coupling agent: 4-6 parts; organic solvent: 80-90 parts; polymer monomer one: 4-10 parts; crosslinking agent one: 0.2-1.2 parts; polymer monomer two: 17-24 parts; comonomer: 4-5 parts; crosslinking agent two: 0.06-0.3 parts; initiator: 0.06-0.12 parts; modified nano-blended material: 0 parts or 3-6 parts; dispersant: 0.3-0.6 parts; viscous modifying liquid: 20-25 parts; wherein, the viscous modifying liquid comprises tetraethyl orthosilicate: 3-7 parts; dimethyl silicone oil: 3-7 parts. This invention effectively improves the fracturing effect of deep unconventional reservoirs, overcomes the shortcomings of existing temporary plugging agents in terms of insufficient performance and difficulty in synergizing key performances under high temperature and high pressure environments, and realizes their reliable application in reservoirs with different temperature gradients.

This utility model relates to a material feeding device in fracturing operations, including a base and a fixed column. A movable column is slidably inserted into the fixed column, and a rack is embedded in the movable column. An L-shaped plate is formed on the front of the fixed column, and a gear is slidably inserted into the L-shaped plate. The gear is connected to a motor and meshes with the rack. A fixed plate is fixed to the top of the movable column, and a connecting column is fixed to the top of the fixed plate. A placement plate is fixed to the top of the connecting column, and a feeding plate is hinged to one side of the placement plate. Sliding grooves are formed on both sides of the connecting column, and an L-shaped column is slidably inserted into the grooves. The L-shaped column is located above the fixed plate. An electric push rod is installed on the back of the L-shaped column, and a connecting block is hinged to one side of the L-shaped column. The end of the connecting block away from the L-shaped column is fixedly connected to one end of the placement plate. This utility model allows for adjustment of the operating height and facilitates adjustment of the feeding angle, thereby ensuring uniform dispersion of materials in fracturing fluid.