“Transferable oil and gasoline know-how utilized to geothermal wells within the Netherlands.”
Oilfield completion know-how and reservoir evaluation has great potential for geothermal tasks as proven on this case examine within the Netherlands.
Connecting the wellbore to the reservoir is vital for water injection and geothermal water manufacturing venture success. This connection permits fluid to circulate effectively by the rock for warmth seize after which upward into the closed-loop distribution community for warmth technology into amenities, greenhouses, and residences when relevant.
The Greenport Westland-Oostkand space is a sizeable geothermal district heating venture close to Maasdijk, Netherlands. Its grasp plan includes 153 doublets unfold over a 170 km2 space. Upon completion, it has the potential to offer 25% of Greenport’s greenhouses with warmth for 30 years. A number one power providers supplier, Expro, was awarded a ten-well tubing conveyed perforation (TCP) venture for Greenport Westland-Oostkand’s geothermal district heating initiative. The venture consists of 5 pairs of wells, every with particular goal sandstones.
Inside this space, there are two goal sandstones inside a number of wells drilled:
- Delft – shallower, cleaner (~50m), with ~150m hole in between,
- Alblasserdam – deeper, much less clear, thicker (~150m)
A few of these wells skilled sand manufacturing and properly integrity challenges. The present design utilized acquainted oilfield properly building and cementing; nevertheless, it differentiates with Glass Bolstered Epoxy (GRE) lined casing to guard from extremely corrosive salt water. The plan was to make use of an oilfield completion methodology that consists of a TCP system conveyed on Coiled Tubing (CT) utilizing a Dynamic Underbalance approach (DUB) to offer uniform wellbore underbalance on the time of firing for optimum perforation tunnel cleansing.
Expro was required to run lengthy intervals of huge OD perforating weapons with high-shot density on small-diameter Coiled Tubing, and it was important to make sure the profitable and protected deployment, firing, and retrieval of an prolonged backside gap meeting (BHA). The perforating weapons had an outer diameter of 114 mm (4.5 in) and a excessive shot density of 39 photographs per meter (12 photographs per foot). The Coiled Tubing had a small outer diameter of fifty.8 mm (2.00 in), small American Macaroni Tubing (AMT) threads with a diameter of 38.1 mm (1.50 in), and low tensile energy of 42,000 lbs.
The Reservoir Engineering group took remedial measures to handle this problem. Shock modeling was carried out utilizing PulseFrac to judge and make sure the profitable deployment, firing, and retrieval of the lengthy BHA on Coiled Tubing. By conducting this evaluation, the group aimed to mitigate potential dangers and uncertainties related to the Coiled Tubing operations, supporting the venture’s general operational success and security.
The problem was making certain the profitable and protected deployment, firing, and retrieval of the lengthy backside gap meeting (BHA) on Coiled Tubing (CT). Moreover, managing the danger related to two unbiased rig set-ups, every requiring totally different lifting, dealing with, threat evaluation, and personnel competencies and coaching, posed a big problem.
Expro offered this case examine as a technical paper on the current Geothermal Rising convention and might present extra particulars upon request.
About Expro
Working for purchasers throughout the properly life cycle, Expro is a number one supplier of power providers, providing cost-effective, revolutionary options and what the Firm considers to be best-in-class security and repair high quality. The Firm’s intensive portfolio of capabilities spans properly building, properly circulate administration, subsea properly entry, and properly intervention and integrity options.
With roots relationship to 1938, Expro has roughly 7,800 staff and gives providers and options to main exploration and manufacturing corporations in each onshore and offshore environments in roughly 60 international locations. For extra data, please go to and join with Expro on X (previously Twitter) @ExproGroup and LinkedIn @Expro.
