Considering the geological and reservoir conditions in the north-west fields of Cuba, a program is being developed for casing running and cementing long extended reach wells with a horizontal displacement up to 10,000 meters. The paper reveals the result of the main tasks, which include design of the well construction, calculation of casing strings, development onting program, focused on obtaining a high-quality cemf a cemeenting in this type of wells. It also assesses the impact of the implementation of several proposed strategies, in the main indicators of the process of casing running and cementing. The design of our horizontal well profile considers that the profile is in second dimension because azimuth does not suffer variations and consists of five sections: first section is vertical, then two sections with angle construction and finally a horizontal section. To make the necessary calculations of our profile, it was necessary to develop a new calculation methodology that considers the initial and final data of the classical methodology and at the same time considers the new geometric condition. Considering the characteristics of geological formations and using the classical methodology for calculating the necessary diameters of casing strings and bits in construction are included: Conductor Pipe; Surface Casing; Intermediate Casing 1; Intermediate Casing 2 (Running in the hole in 2 stages); Production Liner - Liner and Slotted Liner Filter. Cementing program of conductor pipe and a surface casing using a stinger is developed, also the development program for running and cementing multistage sections for the first intermediate column, in addition the development program for running and cementing of second section in the second technical column.