CleanWell高效洗井，促使完井成本最小化

Halliburton CleanWell Solutions provide the latest generation of filtration services, wellbore cleanup fluids, mechanical wellbore cleaning tools, and optimized software modeling.

Well cleaning operations represent a critical stage of well construction between drilling and completions. When designed properly, well cleaning is an operator’s best opportunity to manage debris before it becomes a critical issue, as well as ensure the well fluids have been filtered and treated to protect downhole equipment and the reservoir. Debris problems that affect completion equipment can lead to several days of downtime and remediation as well as affect the productivity and life time of the well. CleanWell Solutions is specifically designed to help prepare the well for successful completion, protect the formation from damage, save time and reduce risks.

Features and Benefits

Single-trip tool system
Customized suite of clean-up pills
Equipment with double filtration flow rate
Extended well life
Completions AFE & flat line efficiency

OVERVIEW
A major operator in the Middle East needed an all-encompassing wellbore cleanup solution for a trial well experiencing static losses in the well’s openhole lateral section. Wellbore cleaning tools, chemicals, and filtration services would be needed to prepare the well for completion, so finding the right combination was critical.

With CleanWell® Solutions, Halliburton was able to successfully execute the job, enabling the operator to avoid losses in the upper lateral. This was accomplished with zero
non-productive time (NPT) and with no additional costs to the operator’s authorization for expenditures (AFE).

CHALLENGES
The operator required a customized wellbore cleanup program to ensure that the well would be ready for the completion phase. This required a dedicated bottomhole assembly (BHA) solution to avoid inducing fluid loss, along with field-proven cleanup chemicals and a dedicated filtration system.

A major complication was the fact that the openhole lateral had previously been experiencing fluid losses at a rate of 7 barrels per minute (bpm) into the formation. Therefore, it was important that flow rates and equivalent circulating densities (ECDs) were monitored and controlled to prevent any losses.

SOLUTION
Halliburton subject matter experts developed an integrated solution to maximize efficiencies and protect the operator’s production targets.

CleanWell® mechanical wellbore tools were recommended to recover debris and enhance well hydraulics during the displacement by using a ball-activated circulating sub. A wellbore cleanup pill train was designed and optimized using Completion Fluid Graphics (CFG™) modeling, which delivers full predictions of pump rates, velocities, and ECDs. A dedicated filtration system was specified based on well fluid properties, volumes and costs.