his product is a new type of multi-scale self-degradable rigid plugging agent for plugging, which can be used in combination with flexible plugging agent, and can also avoid the problem of rapid pressure relief caused by too fast dissolution of common plugging agent. It is used for conventional workover to seal the original high-permeability fractures, so as to open new fractures and increase production and injection. It can strongly adhere to rock and proppant at the underground irregular crack to form a closed and compact filter cake to resist the pumping pressure and achieve the effect of temporary plugging. The continuous change of product size makes the particles can be complementary and connected into blocks, which is more flexible to adapt to the size of the complex fracture opening in the underground, and can be effectively sealed.

This product is made of natural green environmental protection biodegradable materials. At the formation temperature, solid particles are timely softened into mud and dissolved without residue. Its viscosity is close to that of water. It is easy to reverse flow and has little damage to the formation. It is an ideal assistant. AND series plugging agent

Performance index of sealing agentDegradability

The product meets the hot water degradation test: degradation in 90 ℃ hot water for 1 day, and the weight loss rate exceeds 95%; The degradation rate was close to 100% after 3 days. Test conditions for degradation performance: add 100ml of water and 10g of plugging agent AND-1280 in a closed container, keep the temperature constant at 90 ℃ for a certain time, and then filter the degradation material underwater with a 300 mesh screen, collect the residual degradation material on the screen, dry and weigh it, which is the undegraded quality. Other performance

As a rigid plugging agent, it needs to be used in combination with flexible plugging agent; Sealing strength ≥ 40MPa, material melting point ≥ 170 ℃; The material loses its mechanical properties and becomes a low-viscosity liquid after being exposed to 90 ℃ hot water for 4 h. Packaging, transportation and storage

The package is packed in a three-in-one composite bag, with a net weight of 25kg per bag, or customized according to customer requirements. Storage: Store in a cool, dry and ventilated place to avoid moisture. The shelf life is 24 months.