The Troika Subsea development project has produced the top four hydrocarbon producing wells in the Gulf of Mexico - three wells each delivering greater than 40,000 STBOE/D sustained rate. This paper will give the reader an overview of the completion designs and installations, but equally important, what lessons we learned to apply on our next deep water high rate producers. The Troika field is located in 2700' of water and was a fast paced development project which was delivered (from discovery to first oil production) in only 39 months - a deep water industry record! This subsea development consists of five subsea wells clustered around a production manifold and tied-back 14 miles to the host platform. Many well design aspects, various technologies, and timing issues had to converge quickly for the success of this project. Completion practices will be reviewed and resulting productivity performances will be charted. The following areas will be discussed:Well performance historyPerforating practicesFluid loss control practicesSand control operationsTubing installationFlowback operationsSubsea operationsBatch operationsPersonnel and training Introduction The Troika development is located about 100 miles offshore Louisiana in the Gulf of Mexico in Green Canyon blocks 200, 201, 244, and 245 blocks (Figure 1). The subsea development consists of an eight slot manifold, an electrical umbilical, an hydraulic/chemical injection umbilical and two 10 inch flowlines. The facilities are operated remotely from the Bullwinkle platform located 14 miles northwest of the Troika manifold location (Figure 2). The initial development of the field consisted of batch completing three wells in the S-10 reservoir followed by "drill-then-complete" for each of the final two wells, also in the S-10 reservoir. The S-10 is an unconsolidated Pliocene sand, described in some detail below. First production from the field occurred in November of 1997 with production facilities designed to handle 80,000 STBO/D, 146 MMCF/D and 40,000 BWPD; but based on the results of the initial well completion, the facility was upgraded to increase the Troika processing capacity to 100,000 STBO/D and 200 MMCF/D. The S-10 reservoir thickness is between 200' (crestal site) to over 600' (OWC site) with sidewall core permeabilities ranging from 1,000 md to over 5,000 md (Figure 3). The oil gravity is 37 degree API with a GOR of about 1975 SCF/STBO. The bottom hole pore pressure gradient ranged from 14. 2 at the crest to 13. 7 ppg lower on structure with a bottom hole temperature range of 175 to 185 degrees Fahrenheit. Seismic and well data suggested a homogeneous reservoir both laterally and vertically. The combination of the above factors led to the belief that the S-10 production wells would have a high deliverability. Forecasted rates were between 20,000 and 25,000 STBO/D/well, a target rate which no well in the Gulf of Mexico had ever consistently produced at the time of the planning of the Troika project. Recoverable reserve estimates were between 200 and 300 million barrels of oil in the S-10 sand. A generic wellbore sketch is shown as Figure 4.