1.Research on water plugging technology of horizontal well with continuous pipe
Because of the special structure of horizontal well. If no measures are taken after the water is found, the water content will continue to rise.It will restrictits overall development process seriously.The prerequisite for water control in horizontal Wells is to find the outlet position，The conventional method of finding and plugging water in horizontal Wells is difficult to adapt to complex well conditions, and there are great risks.For this reason, this paper studies the technique of finding and plugging water in the horizontal well with continuous pipe -- downhole switch slide valve and supporting continuous pipe transmission downhole control tool.
2.Amine - based high - cleaning drilling fluid technology
With Its own strong inhibition ability.The system greatly reduces the hydration and dispersion of clay, and partially destroys the hydration structure of clay, so as to improve the stability of borehole wall and the cleaning ability of borehole.The spot application shows that the borehole wall stability is good when compared with the same type in this block,, the mechanical drilling speed is greatly improved, and the success rate of well amine electric measurement reaches 100%.At the same time, the fluid density of the well is small, the content of fine particles is small, the reservoir protection effect is good, and it has good spreading and application value.
3.Development of cross-linked konjac gum/xanthan gum adjuvant preparation
When the oil field is not in the modulation, the water injected into the reservoir will bypass the oil saturated zone and the low permeability zone and enter the oil well from the high permeability zone.In order to improve the recovery rate of water flooding, the high permeability layer must be closed.It not only saves high price colloids but also achieves better results than single colloids.
Above are the application of mainstream cementing technology.
Our High temperature resistant filtrate loss agent SM-JL-250 used in the process of drilling operations, the amount of fresh water slurry is generally 0.3-1%, 1-2% salt water slurry. Directly put into the circulation of pulp, can also be formulated into glue to join.
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