3results about How to "Timely evaluation" patented technology

This invention belongs to the field of drilling stability analysis technology, specifically a wellbore stability evaluation method, electronic equipment, and media. This method establishes a wellbore stability index for the first time, using the average of the wellbore stability indices from multiple wellbore stability sample wells as a threshold. The closer the target well's wellbore stability index is to the threshold, the better the wellbore stability; conversely, the further away, the worse the wellbore stability. This invention's method can evaluate wellbore stability while drilling with high accuracy. The electronic equipment and media based on this invention broaden its application scenarios, making it suitable for evaluating the wellbore stability of horizontal wells in sandstone and mudstone formations.

The method, system, device and medium for evaluating the open flow capacity of a gas well in the early stage of reservoir reconstruction include the following steps: setting a metering device at the wellhead of a gas production well; collecting the daily oil, gas and liquid production of the wellhead of the gas production well by the metering device; obtaining the weight M of the total output fluid at the wellhead of the gas production well according to the daily oil, gas and liquid production of the wellhead of the gas production well; calculating the density p of the mixed-phase fluid in the wellbore; obtaining the flow pressure gradient G according to the density p of the mixed-phase fluid in the wellbore DS and the bottom hole flowing pressure P wf ; obtaining the absolute open flow capacity q DS according to the flow pressure gradient G wf and the bottom hole flowing pressure P AOF by using the point method empirical formula, and evaluating the actual productivity of the gas production well. The present application can quickly and real-timely calculate the flow pressure gradient in the wellbore of the production well and the bottom hole flowing pressure. The method is simple, practical and effective, and can timely and accurately evaluate the actual productivity of the gas production well.

The application discloses a kind of water hammer pressure wave signal filtering effect evaluation method and device, the method comprises: according to first inverse frequency and second inverse frequency, determine first evaluation index data, first inverse frequency and second inverse frequency are located in second cepstrum response curve, second cepstrum response curve has second target energy peak value;Judge whether second target energy peak value satisfies preset boundary constraint, and preset boundary constraint is the constraint between first target energy peak value and second target energy peak value, and first target energy peak value is located in first cepstrum response curve;If yes, according to second cepstrum response curve, obtain third cepstrum response curve;According to second target energy peak value and extreme point set in third cepstrum response curve, determine second evaluation index data;According to first evaluation data and second evaluation data, the filtering effect of water hammer pressure wave signal is comprehensively evaluated.The application can evaluate the filtering effect of water hammer pressure wave signal in time and accurately.