<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e07dd-d5a7-7cf3-afff-2a342cb61a74,g:932b3ca8-afaa-4a84-a26e-80ab23655acc-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.div.energy/role/Cover" xlink:type="simple" xlink:href="dec-20260805.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.div.energy/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019e07dd-d5a7-7857-adc0-c4679982c270" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_DocumentType_019e07dd-d5a7-7857-adc0-c4679982c270" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019e07dd-d5a7-7b4f-9975-919ee8d0bc89" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_DocumentPeriodEndDate_019e07dd-d5a7-7b4f-9975-919ee8d0bc89" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019e07dd-d5a7-767a-a2b4-b6adcc5ae50a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_EntityRegistrantName_019e07dd-d5a7-767a-a2b4-b6adcc5ae50a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019e07dd-d5a7-742d-b032-22fd642d7e9e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019e07dd-d5a7-742d-b032-22fd642d7e9e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019e07dd-d5a7-76d6-9f56-f13aae9a3512" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_EntityFileNumber_019e07dd-d5a7-76d6-9f56-f13aae9a3512" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019e07dd-d5a7-7741-bf2a-7816d1a5fcc0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_EntityTaxIdentificationNumber_019e07dd-d5a7-7741-bf2a-7816d1a5fcc0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019e07dd-d5a7-7844-ad05-bce2d64d752c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_EntityAddressAddressLine1_019e07dd-d5a7-7844-ad05-bce2d64d752c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019e07dd-d5a7-7600-a007-127ed7ec138f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_EntityAddressCityOrTown_019e07dd-d5a7-7600-a007-127ed7ec138f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019e07dd-d5a7-7c9d-b9b3-604551bbe2ca" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_EntityAddressStateOrProvince_019e07dd-d5a7-7c9d-b9b3-604551bbe2ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019e07dd-d5a7-7b24-a69d-13d58663fe35" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_EntityAddressPostalZipCode_019e07dd-d5a7-7b24-a69d-13d58663fe35" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019e07dd-d5a7-7b15-ae59-cbce6848cd16" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_CityAreaCode_019e07dd-d5a7-7b15-ae59-cbce6848cd16" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019e07dd-d5a7-7ccb-a350-594fd452699d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_LocalPhoneNumber_019e07dd-d5a7-7ccb-a350-594fd452699d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019e07dd-d5a7-78e9-9e76-ddcd70dd34ad" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_WrittenCommunications_019e07dd-d5a7-78e9-9e76-ddcd70dd34ad" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019e07dd-d5a7-7355-94a3-cd36b014ab2a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_SolicitingMaterial_019e07dd-d5a7-7355-94a3-cd36b014ab2a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019e07dd-d5a7-7b7c-a622-5f177d5ff239" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_PreCommencementTenderOffer_019e07dd-d5a7-7b7c-a622-5f177d5ff239" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019e07dd-d5a7-743a-b45d-1fa5583017af" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019e07dd-d5a7-743a-b45d-1fa5583017af" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019e07dd-d5a7-7319-900e-ce04a2f9a8bf" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_Security12bTitle_019e07dd-d5a7-7319-900e-ce04a2f9a8bf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019e07dd-d5a7-77dc-99c7-5c78a2f7bb04" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_TradingSymbol_019e07dd-d5a7-77dc-99c7-5c78a2f7bb04" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019e07dd-d5a7-7579-a1b6-ec86416df95e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_SecurityExchangeName_019e07dd-d5a7-7579-a1b6-ec86416df95e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019e07dd-d5a7-7add-8c17-c744da8c1867" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_EntityEmergingGrowthCompany_019e07dd-d5a7-7add-8c17-c744da8c1867" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019e07dd-d5a7-739f-81bd-c865de4e1bc0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_AmendmentFlag_019e07dd-d5a7-739f-81bd-c865de4e1bc0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019e07dd-d5a7-7ac5-a33f-8311d918085a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e07dd-d5a7-7787-9339-5f12aa60e1a4" xlink:to="loc_dei_EntityCentralIndexKey_019e07dd-d5a7-7ac5-a33f-8311d918085a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
