Jiangsu Oilfield's "one-opening and completion of drilling" advances cost reduction and fee reduction

News from Sinopec News Network In order to actively promote the "Four Lifts" work, Jiangsu Oilfield broke the mind-set and organized and carried out the application research of "Drilling in One Opening and Finishing".

Innovation and change, opening up a new space for cost reduction and efficiency enhancement.

Innovation and change, breaking conventions, and implementing "one-opening and finishing drills" will further expand the space for cost reduction.

Jiangsu Oilfield is a low-pressure and low-permeability oilfield, and it has the conditions to implement "one-open-drilling completion".

In-depth advancement, research and scientific implementation of new measures.

Based on the statistical analysis of the data of more than 2000 conventional wells, the Weizhuang block was determined as the first batch of implementation targets, and a special meeting was held to demonstrate the specific plan for implementing "one start and finish drilling": the use of environmentally friendly drilling fluids instead of environmentally risky Composition; use double cement, optimize cement return height, and improve the quality of wellbore sealing; introduce blowout preventer to reduce installation work intensity and improve installation efficiency on the basis of meeting well control standards.

In view of the difficulties in the implementation of the first drilling, the technicians proposed a "two shorts and one long" short trip method, which is different from the second drilling.

At present, 5 wells have been successfully applied for "Drilling in One Start", and the applied well depth has also expanded from less than 2,000 meters to more than 2,500 meters.

　　The prospects are promising to help the "four mentions" embark on a new journey.

　　In the next step, we will improve the "Guiding Opinions on the Implementation of Drilling Once Started and Completed", standardize the links of "well location selection, design writing, device selection, and on-site operation" as soon as drilling is completed, and actively carry out research on expanding the application scope of "Drilling Started and Completed" Increase the scale of application in conventional wells shallower than 2500 meters, demonstrate and promote the implementation of well depths above 3000 meters.

　　It is estimated that after the large-scale promotion and application of this technology, the annual drilling investment can be saved by more than 10 million yuan.

　　(Li Taiwei and Tang Yuhua)