Abstract: A borehole pump including an eccentric screw pump with at least one stator and at least one rotor. The eccentric screw pump has, in its upper end region, in each case an upper sealing arrangement and, in its lower end region, in each case a lower sealing arrangement. The borehole pump includes a receiving housing having a lower sealing region and at least two upper sealing regions, wherein the eccentric screw pump is arranged in the receiving housing such that the lower sealing arrangement of the eccentric screw pump is assigned in a form- and/or force-fitting manner to the lower sealing region of the receiving housing and such that the upper sealing arrangement of the eccentric screw pump is assigned in a form- and/or force-fitting manner to one of the at least two upper sealing regions of the receiving housing. An installation procedure for installation at a lower end of a riser pipe and a replacement procedure for replacing a borehole pump arranged at a lower end of a rise pipe are also disclosed.