4results about How to "Improve working time" patented technology

The invention provides a gas field planning yield prediction method which comprises the following steps: selecting a typical well, and establishing a whole production cycle single well yield profile for the typical well; according to the single well yield profile, determining a relational expression between the total yield of each time node in the planned yield profile and the monthly deployment well number and the monthly yield of the corresponding typical well; and determining the total yield of each time node of the overall yield profile of the gas field according to the relational expression. By means of the scheme, gas field planning yield prediction can be rapidly carried out for multiple time nodes, and the accuracy and efficiency of yield planning are improved.

This invention discloses an integrated fracturing and production tubing string for open-hole horizontal wells and its application method, solving problems such as poor segmentation and sand control effects, and complex operation processes. The device includes a central tubing string and a tool string. The central tubing string includes a top packer, a first sealing cylinder, a quick connector, multiple filling production assemblies, a locking sealing assembly, and a float shoe assembly. Adjacent filling production assemblies are connected via an open-hole packer. Each filling production assembly includes a circulating sleeve, a first double-layer screen, a production sleeve, a second double-layer screen, a second sealing cylinder, a filling sleeve, and a positioning clamp. The tool string includes a top setting tool, a test sealing rod, a reconnection rod, a reconnection tool, a filling control tool, a filling sleeve closing tool, a positioning tool, a filling sleeve switching tool, a circulating sleeve single-closing tool, a circulating sleeve single-opening tool, a positioning sealing rod, and a shearing sleeve. This invention enables effective segmentation, sand control, and selective production in oil wells.

One aspect of the present invention relates to a dental fluoroaluminosilicate glass powder, a 50th percentile volume diameter of which is 5.0 µm or more and 9.0 µm or less, and a 10th percentile volume diameter of which is 2.4 µm or more.

This invention discloses a scaffold connector for easy disassembly of tall formwork structures, comprising uprights, horizontal bars, vertical diagonal bars, a movable hinge plate, and a connecting plate. The uprights and horizontal bars are connected by the connecting plate. The front end of the connecting plate has six connecting teeth, and the inner edge of the connecting plate has three V-shaped connecting hooks. The front end of the horizontal bar includes six horizontal bar protrusions and three diamond-shaped connecting hooks. The horizontal bar protrusions connect with the connecting teeth, and the diamond-shaped connecting hooks connect with the V-shaped connecting hooks. The movable hinge plate is connected to the horizontal bar, and its upper and lower ends are threaded to the diagonal bars. This scaffold connector, through the rational arrangement of the structure of each component, reduces the local pressure on the connecting plate, and the connecting plate and the horizontal bar can be quickly connected or disassembled using a simple push-pull engagement.