WELL TUBULAR
Contents |
Table Use
Tubular goods is a general term for any kind of oilfield pipe. Casing is steel pipe
installed during drilling to prevent collapse of the wellbore and to prevent fluid
exchange between the rock and the well. Liner is casing that does not extend to
surface. Tubing is a removable pipe connecting the well completion to the
surface for the purpose of carrying produced fluids. Drill pipe is used only
during drilling operations, to convey and power a drilling assembly (bit, core
barrel, etc.) and to circulate drilling fluids. A well may have one or several
tubular strings of different types, diameters, properties, and purposes. Each is
assigned a TUBING_OBS_NO.
This table defines the length and depth of the pipe string, pipe specifications
(diameters, steel grade, weight, density, strength), and some other information
about the operations of installing and pulling the pipe.
The TOP_STRAT_UNIT and BASE_STRAT_UNIT columns are intended to
capture the formations as reported on the source document. They must be
defined with the same STRAT_NAME_SET_NAME. If the values are not
available from the source, we recommend these columns be left null. Do not
copy values from STRAT_WELL_SECTION, as this would be too difficult to
maintain.
Several columns use terms defined in reference tables. There is not yet an agreed
standard set of reference values, but the following values illustrate the intended
meanings:
- TUBING_TYPE: general categories; e.g., casing, liner, production tubing
- COLLAR_TYPE: a coupling to join two pipes, e.g., combination collar
- LINER_TYPE: drilling, slotted, gravel pack
Table Comment
WELL TUBULAR: The Well Tubular table contains information on the tubulars for the well. The tubulars can be tubing, casing or liners which are run into the well. A tubing string is a continuous length of pipe used to connect the producing interval in the well to the flowline at the surface. A casing string is a continuous length of pipe used to protect the walls of the well and to assist in interval isolation when completing the well. The table identifies each tubular stri ng used in a single drilling phase of the well. Liners are used to prevent sand from entering the well bore.
PPDM On-line Documentation (P.O.D.)
Tables that are used by WELL_TUBULAR
- PK - R_SOURCE
- PK - R_TUBING_TYPE
- PK - WELL_DRILL_PERIOD
- PK - WELL
- BUSINESS_ASSOCIATE
- CAT_EQUIPMENT
- EQUIPMENT
- PPDM_UNIT_OF_MEASURE
- R_COLLAR_TYPE
- R_COUPLING_TYPE
- R_LINER_TYPE
- R_PPDM_ROW_QUALITY
- R_TUBING_GRADE
- STRAT_UNIT
