压裂桥塞系统遇上新技术，效果如何呢？

GEODynamics introduces new zone isolation technology

GEODynamics has introduced a new and evolutionary technology in composite frac plug systems. Called the EVOLV+FracTrapTM Zone Isolation System, it provides both ball retrieval and composite plug technology in one tool that delivers risk-free, ball-on-seat, plug-and-perf isolation solutions to operators. This unique combination makes water and time savings possible, by eliminating traditional risks with the additional benefit that allows operators to test casing pressure prior to perforating operations.

The new frac plug technology introduces the next generation in well completion design and performance, and is optimized for the entire lifecycle from run, set, test, hold, and mill. The innovative slip technology prevents pre-sets, allowing for indefinite hold time under pressure. Having run ball-on-seat, operators are able to ensure the plug has been properly set and sealed prior to perforating operations. Then, once the hydraulic fracturing procedure has been completed, the mule shoe design provides positive lock-up for drill out of the plug. Consistent drill out times for a fully composite plug is between eight to 12 min. with a favorably sized debris matrix returned from clean out operations. Depending upon well completion requirements, the system is available in either composite or cast-iron slip models.

The system’s water and time-saving technology allows the frac ball to be conveyed down with the perforating equipment to mitigate the risk of costly intervention should an unforeseen event prevent injecting into the well. The method of pumping the ball-on-seat is a field-proven and time-saving technique; however, until now it bore a considerable cost risk should injection failures occur. EVOLV+FracTrap’s patented setting adapter and ball retrieval technology reduces this risk. Utilizing this new system, the frac ball confidently can be run-on-seat using significantly less water and time.

The overall economic benefit of the technology varies depending upon several factors, such as size of casing, length of lateral, and whether the ball is being pumped from surface or only along the lateral. The company uses computer modeling software to estimate job savings based on detailed input that is specific to the well’s construction. Conservative estimates for a well with 5.5-in. casing and the ball pumped from the surface show savings of 14.5 hr of pumping time and over 12,600 bbl of water. Employing the new technology has potential savings up to $100,000 per well.

EVOLV+FracTrap technology has proven its worth to operators that have employed the system when perforating guns have failed to fire, where already over 30 successful ball retrievals have been performed. With the new system in the tool string, operators followed simple retrieval procedures. Successful ball retrieval occurs by flowing at a rate of approximately two bbl/min. for two to three min. Following the retrieval process, fluid was then injected into the well at two bbl/min for three minutes. No increase in pressure was observed, indicating the ball had been caught. Once the wireline was pulled from the well, it was confirmed, mitigating the costly need to mill the plug and reset a new one on coiled tubing.

System Advantages:
Confidently run the fracball in place without risk
Less water to seat the ball
Significant water savings on every stage, along with pump time savings
Unmatched engineering, manufacturing and quality control
Positive lock up for drill out
Composite or cast iron slip options available
Available with pump down ring