How a horizontal programme is stated
A horizontal programme is stated in the enquiry by the fields the design names: the intervals, and for each interval the connection, the coupling clearance against drift and the weight. The checklist below states each as a field the design names.
The published lists behind this page are the standard casing lists, stated separately: the size list runs from 4-1/2 in to 20 in, and the published grade list runs J55 through P110; the two lists are not documented against each other. The thread forms the catalogue lists for casing are STC, LTC and BTC, with premium patterns in the processing family. State the duty in the enquiry: the connection the design names for each interval — as on the gas well page, the coupling clearance required against drift — and the landing space-out, with the hanger and packer positions the completion design names against measured depth.
Specification checklist for horizontal programmes
| Check | What the design states | Where it is stated |
|---|---|---|
| Connection form per interval | The duty the design states for the interval | RFQ, per line — the form the design names |
| Coupling OD vs drift | The clearance the design requires against drift | Dimensions page + drift guide arithmetic |
| Grade and weight together | The load cases the design states | Weight and drift selection guide |
| Landing space-out | Positions named against measured depth in the design | Pup joint specifications page |
| Make-up and handling | The handling the specification requires | Protectors, gauging, tally discipline |
The product is the standard product; the geometry is stated in the enquiry. If your programme is horizontal, say so in the enquiry's first line, with the connection and clearance requirements the design sets; and ask which published sizes, grades and forms can be machined against them, to be confirmed in the quotation. Ask for MOQ, packing and lead time to be confirmed in the written quotation for the specification. The fourteen published casing sizes are 4-1/2, 5, 5-1/2, 6-5/8, 7, 7-5/8, 8-5/8, 9-5/8, 10-3/4, 11-3/4, 13-3/8, 16, 18-5/8 and 20 in.
Do horizontal wells need special casing products?
The design names the connection form, the clearance and the weight for each interval of the programme. The product families are the same ones this site documents.
BTC or premium for the lateral?
Load and sealing decide, per the design: BTC where the design names it for the interval's loads, a premium pattern where the design names one for the interval. This page publishes no general preference between them, and no rule assigning a form to a duty.
How is clearance stated for a horizontal programme?
The design states the clearance requirement for a horizontal programme in the enquiry, with the coupling OD and the drift figure it must clear; the margin itself is the figure the design sets.
Request a Quotation
Send your size, grade, thread and quantity. MOQ, packing and lead time are confirmed in the quotation for your exact specification — no generic promise replaces a written quote.