INFORMATION CIRCULAR NO. 42 The highlights and background of the activity connected with drilling in 1962 in the Sunniland field follows: The Humble Oil and Refining Company, No. 5 Gulf Coast Realties Corporation.well, according to permit no. 51 dated November 27, 1962, will be deepened from 11,578 feet to a proposed depth of 11,700 feet. The bottom of the Chamid zone, which is the lower of the two zones containing intervals which have produced in the field, should be reached at a depth of about 11,628 feet. It is shown in table 1 that in this well the top of the middle member of the Sunniland formation occupies a relatively low structural position as compared with other Sunniland field wells. This well originally was completed on May 24, 1947, in the open hole from 11,562 to 11,578 feet (-11,531 to -11,547 feet, subsea). Initial flowing production (table 1) was 518 barrels of 250 API (American Petroleum Institute) gravity oil, and 0.3 percent BS&W (basic sediment and water) through a /4-inch choke. Accumulated production to October 1, 1962, was 440,571 barrels of oil, with 59 percent (or 628,257 barrels) of the fluid recovery being salt water. During the production test of September 1962 the well pumped 71 BOPD (barrels oil per day) with 77 percent of the fluid recovery being salt water. The Humble Oil and Refining Company, No. 18 Gulf Coast Realties Corporation well is a new producer which occupies an infield location between four other Gulf Coast Realties Corporation producers separated from the No. 18 well by distances ranging from about one-third to one-half mile. In these surrounding wells production has been obtained for periods of 12 to 15 years. Recovery on a pumping test of the No.18 well through 2-inch tubing from a perforated interval in the Sunniland field Chamid zone at 11,585 to 11,589 feet (-11,551 to -11,555 feet,subsea) was: 178.7 BOPD (19.60 API corrected gravity) 19.8 barrels BS&W (158,500 ppm [parts per million ]chloride) Some gas As shown on table 2 the No. 1.8 Gulf Coast Realties Corporation well is structurally the highest well in the Sunniland field. Despite this fact, however, the top of the perforations in this well is lower by amounts ranging from 2 to 18 feet than the bottom of the perforated or open-hole interval in any well in the field, with the exception of the No. 1 and No. 4