Name: Expro
Address: Expro Americas, LLC. 1311 Broadfield Boulevard Suite 400 Houston, Texas, 77084 United States
Price range: $

Customer Challenges

A major operator identified key challenges and operational risks when planning to run 9-7/8” Casing in a 12-1/4” open hole section of an extreme Extended Reach Drilling (ERD) Well
With a planned Measured Depth (MD) of over 25,000ft, and a step-out ratio of 2.15, the mixedweight 9-7/8” Casing string was set to be a record length
The risks of differential sticking were high, especially if the string were to remain stationary in open hole for any amount of time, so equipment would be required that minimized static time
The maximum pickup weight was expected to reach 1,350,000lbs (675 tons), and based on offset data from similar Wells, it was predicted that the string would need to be washed down through key formations of the open hole
To mitigate these risks Expro were challenged to deliver a heavyduty equipment package that provided the ability to make-up, fill-up, circulate and run the mixed weights of Casing and the fullbore landing string, in singles and stands, all without the need to change out handling equipment

Expro Excellence

Expro provided specialist equipment and services that enabled all objectives to be achieved
Due to the complexity of the job many scenarios were analyzed and calculations were made during the planning stage, in relation to die efficiency, slip crush modeling, reduced hoist capacity while circulating, casing stretch and mixed torque application
Seven technologies with proven track records were used to maximize safety and efficiency:

The CRTi2-8.63 750HC handled the 1,350,000lb (675 ton) of ‘pick-up weight’ with ease whilst providing the capability to circulate at 942 lpm (249 gpm) and 55 bar (800 psi) whilst running in hole to get the string to TD with no issues
The CRTi2-8.62 enabled the driller to activate the tool without the need for any umbilical hanging in the derrick, and when paired with Expro’s 14” 1000ton Split Bushing Spider, provided the heavy-duty, simple and reliable package the customer required for this high-risk, high-valve operation

Operations were completed with zero incidents, zero NPT and zero rejected connections during critical path or rack back operations
The 9-7/8” casing string was successfully run to a final setting depth of 25,247ft on the first attempt, following a consistent Wellbore path of 69° inclination after exiting the 13 3/8” shoe
Due to the last 5,000ft of casing taking three days to washdown, the equipment choice and contingency planning was critical to enable successful manipulation through troublesome open hole zones
Forty stands of casing that were assembled and racked back while drilling the 12-1/4” section were run at strategic points in the operation on the customer’s Super A Class Jack-up rig to minimize stationary time in open hole and therefore minimize the risk of differential sticking
The combination of Expro’s proprietary technologies, meticulous planning, preparation, and execution reduced and eliminated risks to personnel, equipment, and operations
The casing run demonstrated Expro’s continued delivery of first-class service quality to a long-term customer of over 23 years

For further information, please contact wellconstruction@expro.com.

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